20 Best Counterfeit Bill Detectors [2024]

Are you looking for the best counterfeit bill detectors? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling counterfeit bill detectors.

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1 AccuBANKER D450 Counterfeit Money Checker Machine, Magnetic, Infrared, Watermark and Micro-Printing... AccuBANKER D450 Counterfeit Money Checker Machine, Magnetic, Infrared, Watermark and...
2 Money Marker (5 Counterfeit Pens) - Counterfeit Bill Detector Pen with Upgraded Chisel Tip - Detect... Money Marker (5 Counterfeit Pens) - Counterfeit Bill Detector Pen with Upgraded Chisel Tip -...
3 Cassida InstaCheck Small Footprint, Easy to Read Automatic Counterfeit Detector with Infrared,... Cassida InstaCheck Small Footprint, Easy to Read Automatic Counterfeit Detector with Infrared,...
4 Khippus K410 Counterfeit Bill Detector for Money, Credit Cards and IDs Khippus K410 Counterfeit Bill Detector for Money, Credit Cards and IDs
5 Dri Mark Dual Test - The Original Smart Money Pen with UV LED Cap Counterfeit Detector System - Plus... Dri Mark Dual Test - The Original Smart Money Pen with UV LED Cap Counterfeit Detector System -...
6 Safescan 50 UV Counterfeit Bill Detector, Small Footprint, Lightweight, Great for Bills, Credit... Safescan 50 UV Counterfeit Bill Detector, Small Footprint, Lightweight, Great for Bills, Credit...
7 Royal Sovereign Pocket Sized Counterfeit Bill Detector (RCD-UVP), Black Royal Sovereign Pocket Sized Counterfeit Bill Detector (RCD-UVP), Black
8 Counterfeit Money Bill Detector Pens, Markers - Detects Fake Currency - 5 Pack Counterfeit Money Bill Detector Pens, Markers - Detects Fake Currency - 5 Pack
9 Cassida Quattro Fast Automatic Currency Counterfeit Detector with Advanced Sensors... Cassida Quattro Fast Automatic Currency Counterfeit Detector with Advanced Sensors...
10 Dri Mark Dual Test 351UVCL - The Original Counterfeit Detection Marker Pen with UV LED Cap, Tests... Dri Mark Dual Test 351UVCL - The Original Counterfeit Detection Marker Pen with UV LED Cap, Tests...
11 Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size,... Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket...
12 Kolibri KCD-1000 4-Way Orientation Portable Fake Currency Reader/Detector with Ultraviolet, Magnetic... Kolibri KCD-1000 4-Way Orientation Portable Fake Currency Reader/Detector with Ultraviolet,...
13 Dri Mark CFD15PK Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket... Dri Mark CFD15PK Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket...
14 Dri Mark UV Pro Proprietary Ultraviolet Flashlight - ID, Document Fraud & International Counterfeit... Dri Mark UV Pro Proprietary Ultraviolet Flashlight - ID, Document Fraud & International...
15 Royal Sovereign Four-Way Countertop Counterfeit Detector (RCD-3000) Royal Sovereign Four-Way Countertop Counterfeit Detector (RCD-3000)
16 Huron Counterfeit Money Detector Pen (5/15/50/250) (5 pc) Huron Counterfeit Money Detector Pen (5/15/50/250) (5 pc)
17 DETECK Portable Counterfeit Bill Detector Machine, Automatic 4-Way Direction USD & Euro Value... DETECK Portable Counterfeit Bill Detector Machine, Automatic 4-Way Direction USD & Euro Value...
18 Dri Mark Flash Test Counterfeit Bill Detector, 3 Easy Tests in One Small Device, Watermark, Ink,... Dri Mark Flash Test Counterfeit Bill Detector, 3 Easy Tests in One Small Device, Watermark, Ink,...
19 Dri Mark Tri Test - Counterfeit Bill Detector Machine w/AC Adapter - 3 Tests in 1 - Paper, Security... Dri Mark Tri Test - Counterfeit Bill Detector Machine w/AC Adapter - 3 Tests in 1 - Paper,...
20 Cassida 6600 UV/MG – USA Business Grade Money Counter with UV/MG/IR Counterfeit Detection – Top... Cassida 6600 UV/MG – USA Business Grade Money Counter with UV/MG/IR Counterfeit Detection –...
Bestseller No. 1
AccuBANKER D450 Counterfeit Money Checker Machine, Magnetic, Infrared, Watermark and Micro-Printing...
  • FIVE COUNTERFEIT DETECTION METHODS: AccuBANKER D450 Counterfeit Bill Scanner has Ultraviolet, Magnetic Ink, Infrared, Watermark & Size detection.
  • AUTOMATIC DETECTION IN UNDER A SECOND: High-speed bill verification in less than 1 second and detects counterfeit U.S. currency.
  • COMPACT AND EASY TO USE:  Its compact and lightweight design makes it easy to fit anywhere. Use the D450 to protect your business against...
  • AUDIBLE & VISUAL PASS OR FAIL NOTIFICATIONS: Notifies the user if the bill passed or failed the test and has automatic self feeding banknote system.
Bestseller No. 2
Money Marker (5 Counterfeit Pens) - Counterfeit Bill Detector Pen with Upgraded Chisel Tip - Detect...
  • INSTANT VERIFICATION: The Money Marker counterfit marker is specially formulated to deliver accurate and easy results within seconds. Expose a fake...
  • SAVE MONEY by checking and rejecting bad currency with a bill marker counterfeit marker currency pen. Comes in a BOX OF 5 pack of money pen detector,...
  • INNOVATIVE CHISEL TIP lengthens the life of each money pen and helps a business earn more by preventing each money marker counterfeit bill detector...
  • 100% MANUFACTURER MONEY BACK GUARANTEE: We strive to make the best and most convenient counterfeit money pen you've ever used in catching counterfeit...
SaleBestseller No. 3
Cassida InstaCheck Small Footprint, Easy to Read Automatic Counterfeit Detector with Infrared,...
  • Quick and conclusive: confirm a bill's authenticity in less than a second with a clear "Pass" or "Fail" indication
  • Advanced counterfeit money detector: scans money and cross-references a comprehensive database of infrared, magnetic and ultraviolet markings to...
  • The most affordable counterfeit money detector solution offered by America's #1 brand in cash handling- Cassida!
  • Compact and lightweight, the InstaCheck will fit anywhere the authenticity of cash may need to be verified.
  • Backed by a one-year warranty and a helpful, US-based support team.
Bestseller No. 4
Khippus K410 Counterfeit Bill Detector for Money, Credit Cards and IDs
  • Automatic and manual LED UV light activation for quick verification
  • UV detection guide for 5, 10 20, 50, and 100 dollar bills that will show what markings to look for in authentic bills
  • Portable: 4 charging ways available: main socket, vehicle, PC and power-bank. You can use the detector machine anywhere once you have 1 micro USB...
Bestseller No. 5
Dri Mark Dual Test - The Original Smart Money Pen with UV LED Cap Counterfeit Detector System - Plus...
  • Trust The Original, Accept No Substitute: Dri Mark’S Unique Patented Dual Detector Counterfeit Pen And Uv Light Is An Instant And Reliable Way To...
  • Loss Prevention: Catch A Counterfeit And It Pays For Iteself, Perfect For Detecting “Bleached” Bills. These Are $1 And $5 Bills That Have Had The...
  • Fraud Detection: Strong. Compact. Simple. Uv Light Is Great For Authenticating Passports, Credit Cards, Traveler’S Checks, And Drivers Licenses....
  • More Value: Battery Powered Uv Light, 3 Lr-44 Button-Cell Batteries Are Included. Enough Power To Check Thousands Of Bills. Bonus Pack Contains 2 Free...
SaleBestseller No. 6
Safescan 50 UV Counterfeit Bill Detector, Small Footprint, Lightweight, Great for Bills, Credit...
  • POWERFUL UV COUNTERFEIT DETECTOR: Powerful 9W UV light (220V-240V) with a unique integrated reflector designed to easily verify the UV features in...
  • SUITABLE FOR ALL CURRENCIES: The Safescan UV Counterfeit Bill Detector is designed to work with all currencies, perfect for countertop use, easily...
  • EXTEND PRODUCT LIFE: Warm start technology extends the life of the device by over 3X for ultimate convenience
  • SEAMLESS REPLACEMENT: Easily insert new bulb for a fuss-free replacement when the time comes  
  • CERTIFICATIONS: The Safescan 50 UV Counterfeit Detector is backed by a 3-year warranty, offers a 30-day satisfaction guarantee, and is CE certified
SaleBestseller No. 7
Royal Sovereign Pocket Sized Counterfeit Bill Detector (RCD-UVP), Black
  • High Security: Ultraviolet light is used to check UV sensitive strips and markings.
  • Compact and Portable: Counterfeit detector fits in your pocket and in the palm of your hand.
  • User-Friendly: Easy to operate counterfeit detector solutions.
  • Battery Operated: 30 Day Manufacturer's limited
SaleBestseller No. 8
Counterfeit Money Bill Detector Pens, Markers - Detects Fake Currency - 5 Pack
  • INSTANT VERIFICATION - Quickly recognize a fake from a real bill! Our counterfeit currency pens are specially formulated to deliver accurate and fast...
  • CLEAR & CONCISE RESULTS – Our markers are easy to understand. A Black line means the bill is a fake whereas a Gold line means the bill is authentic.
  • SAVE MONEY - By exposing a fake with our Counterfeit Marker, the marker will pay for itself! Plus, our markers are packaged in BOX OF 5, which...
  • INNOVATIVE CHISEL TIP – A Chisel Tip makes marking easy and helps to preserve ink.
  • ESSENTIAL - Our counterfeit detectors are an essential tool for any small business owner, food truck vendor or craft fair artisan.
Bestseller No. 9
Cassida Quattro Fast Automatic Currency Counterfeit Detector with Advanced Sensors...
  • Industry-leading counterfeit detection: Cassida patented "M" Algorithm, the Quattro offers outstanding counterfeit detection combined with the lowest...
  • Four way scan: Insert a bill in any of the 4 possible orientations and the Quattro will verify its authenticity. Other detectors can only verify cash...
  • Backed by Cassida "counterfeit Shield ": If a counterfeit bill is accepted as Genuine, Cassida will reimburse you the full value of the bill within 72...
  • Compact, durable and portable: the Quattro is designed for use anywhere counterfeit detection may be needed and its rechargeable battery means access...
  • Easy-to-read digital display clearly reports pass or fail for checked bills along with their denomination
SaleBestseller No. 10
Dri Mark Dual Test 351UVCL - The Original Counterfeit Detection Marker Pen with UV LED Cap, Tests...
  • INSTANTLY AND EASILY DETECT FAKE BILLS - Prevent profit loss with this fast, accurate, effective counterfeit checker. Dual Detector system finds bad...
  • 2 TESTS IN 1- PROTECT YOUR PROFITS: Security strip test: powerful UV light is embedded in the cap and is easy to activate; The LED bulb reveals the...
  • FRAUD DETECTION - AUTHENTICATOR: Strong, Compact, Simple; UV Light is great for authenticating passports, credit cards, traveler's checks, and...
  • 3 TIMES THE INK OF COMPETITORS - Currency guide sticker, instruction booklet and LR44 button-cell batteries included; Everything you need for...
  • MANUFACTURER 100% MONEY BACK GUARANTEE: Dri Mark's 90 day Limited Warranty from the date of purchase. You can trust TriMark's Dual Test counterfeit...
SaleBestseller No. 11
Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size,...
  • INSTANTLY AND EASILY DETECT FAKE BILLS - Prevent profit loss with this fast, accurate, effective counterfeit tester; Marker pen detects genuine US...
  • DRI MARK PENS WILL OUTLAST AND OUTPERFORM others made offshore; Precision fitted parts ensure long shelf life and no-dry-out if recapped; The Dri Mark...
  • SMALLER PEN, 3 TIMES THE INK - Dri Mark's Pocket Size Counterfeit Bill Detector Pen has 3 times the ink and is almost an inch shorter than previous...
  • TOP QUALITY U.S.A. MADE - Dri Mark is the only US manufacturer and original patent holder of Counterfeit Detector Pens; For over 25 years, the most...
  • MANUFACTURER 100% MONEY BACK GUARANTEE: Dri Mark's 90-day Limited Warranty from the date of purchase; You can trust DriMark's money marker counterfeit...
Bestseller No. 12
Kolibri KCD-1000 4-Way Orientation Portable Fake Currency Reader/Detector with Ultraviolet, Magnetic...
  • [Easy-to-Use] With a simple PASS or FAIL, the KCD-1000 makes it easier to use then counterfeit pens or UV light scanners saving your business time and...
  • [All-Way Orientation] The counterfeit money detector allows bills to be inserted in any orientation when checking for fraudulent bills
  • [High-Level Detection] The money checker utilizes UV, MG, IR, Size, and Double Note to detect any fake counterfeit bills that may be circulating
  • [Infrared Light] Most counterfeit pens and uv lights can only protect against a small number of fake bills. The KCD-1000 uses IR technology ensuring...
  • [Efficient] The process of checking a currency bill with the money detector takes less than 2 seconds and it will safeguard your business. Only reads...
Bestseller No. 13
Dri Mark CFD15PK Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket...
  • INSTANTLY AND EASILY DETECT FAKE BILLS - Prevent profit loss with this fast, accurate, effective counterfeit tester. Marker pen detects genuine US...
  • DRI MARK PENS WILL OUTLAST AND OUTPERFORM others made offshore. Precision fitted parts ensure long shelf life and no-dry-out if recapped. The Dri Mark...
  • SMALLER PEN, 3 TIMES THE INK - Dri Mark's "Pocket Size" Counterfeit Bill Detector Pen has 3 times the ink and is almost an inch shorter than previous...
  • TOP QUALITY U.S.A. MADE - Dri Mark is the only US manufacturer and original patent holder of Counterfeit Detector Pens. For over 25 years, the most...
  • MANUFACTURER 100% MONEY BACK GUARANTEE: Dri Mark's 90-day Limited Warranty from the date of purchase. You can trust DriMark's money marker counterfeit...
SaleBestseller No. 14
Dri Mark UV Pro Proprietary Ultraviolet Flashlight - ID, Document Fraud & International Counterfeit...
  • TRUST THE INDUSTRY LEADER: With 25+ Years of counterfeit & fraud detection experience Dri Mark designed their unique UV Pro Ultraviolet flashlight as...
  • PROTECT YOUR PROFITS: Catch a counterfeit & it pays for itself, Perfect for detecting U.S. “bleached” bills. These are $1 & $5 bills that have had...
  • FRAUD DETECTION: UV Light is great for authenticating passports, credit cards, traveler’s checks, drivers licenses & other official documents....
  • STRONG, COMPACT, SIMPLE: The compact size of the UV Pro ultraviolet flashlight makes it an ideal tool in high-volume venues that may lack the counter...
Bestseller No. 15
Royal Sovereign Four-Way Countertop Counterfeit Detector (RCD-3000)
  • High security: 4-way counterfeit detector runs ultraviolet detection, watermark verification, micro-print detection, and magnetic ink detection.
  • Compact and portable: counterfeit detector has a lightweight, compact design for portability.
  • Durable: UL certified. Heavy duty construction. 1 Year Manufacturers Limited.
Bestseller No. 16
Huron Counterfeit Money Detector Pen (5/15/50/250) (5 pc)
  • User makes a small, quick mark on the surface of currency
  • Genuine currency will yield a faint, light brown mark
  • Counterfeit currency will yield a dark brown mark
  • Recommended particularly for use with all bills equal to or greater than $10 in value
Bestseller No. 17
DETECK Portable Counterfeit Bill Detector Machine, Automatic 4-Way Direction USD & Euro Value...
  • 𝗦𝗮𝘃𝗲 𝘁𝗶𝗺𝗲 𝗰𝗼𝘂𝗻𝘁𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝗺𝗼𝗻𝗲𝘆 – The Swift DT10C is the perfect solution...
  • 𝗣𝗿𝗼𝘁𝗲𝗰𝘁 𝘆𝗼𝘂𝗿 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 – If you deal regularly with large amounts of cash payments and want...
  • 𝗙𝗮𝘀𝘁 𝗮𝗻𝗱 𝗮𝗰𝗰𝘂𝗿𝗮𝘁𝗲 – The Swift DT10C Automatic Counterfit Money Detector accurately count genuine...
  • 𝗖𝗼𝗺𝗽𝗮𝗰𝘁 𝗮𝗻𝗱 𝗣𝗼𝗿𝘁𝗮𝗯𝗹𝗲 – Counting and sorting banknotes has never been smoother, DT10C fake bill...
  • 𝟭𝟭𝟬% 𝘀𝗮𝘁𝗶𝘀𝗳𝗮𝗰𝘁𝗶𝗼𝗻 𝗼𝗿 𝗺𝗼𝗻𝗲𝘆 𝗯𝗮𝗰𝗸 - We take pride in designing &...
SaleBestseller No. 18
Dri Mark Flash Test Counterfeit Bill Detector, 3 Easy Tests in One Small Device, Watermark, Ink,...
  • ACURATELY TEST FOR COUNTERFEIT MONEY IN LESS THAN 1 SECOND - A fast and powerful counterfeit bill checker, triple check each bill quickly and...
  • 3 COUNTERFEIT BILL DETECTION TESTS IN ONE - WATERMARK, INK TEST, AND SECURITY STRIP: simply hold the bill over the lighted panel to see the watermark,...
  • RUGGED PREMIUM BILL CHECKER - COMPACT SIZE - NO BATTERIES NEEDED - ALWAYS READY TO USE: UV tester features automatic sensor switch for one handed...
  • MOST AFFORDABLE FAKE MONEY DETECTOR IN A SMALL SIZE - IDEAL FOR RETAIL STORES : The easiest and smallest versatile bill checking machine that can fit...
  • MANUFACTURER 100% MONEY BACK GUARANTEE - Dri Mark's 90-day Limited Warranty from the date of purchase. You can trust Dri Mark's flash test counterfeit...
Bestseller No. 19
Dri Mark Tri Test - Counterfeit Bill Detector Machine w/AC Adapter - 3 Tests in 1 - Paper, Security...
  • INSTANTLY AND EASILY DETECT FAKE BILLS - Detects washed bills with powerful UV LED light; a fast and accurate counterfeit checker using the original...
  • 3 TESTS IN ONE COUNTERFEIT MACHINE : PAPER TEST- Authenticator pen tests for genuine currency paper; UV TEST - Checks for embedded security strip on...
  • COMPACT AND PORTABLE: operates on included AC adapter or 3 "C" batteries (optional) Reveals UV security markings on drivers licenses, credit cards,...
  • MORE EFFECTIVE THAN JUST A COUNTERFEIT PEN: Counterfeiters bleach real US Currency and illegally print higher dollar amounts on smaller bills; the TRI...
  • MANUFACTURER 100% MONEY BACK GUARANTEE: Dri Mark's 90 day Limited Warranty from the date of purchase; US Patents 8,531,652 and D 666,5145
SaleBestseller No. 20
Cassida 6600 UV/MG – USA Business Grade Money Counter with UV/MG/IR Counterfeit Detection – Top...
  • Efficient & Reliable Advanced And Reliable Money Counting With Blazing Speed– Up To 1,400 Bills Per Minute And Counterfeit Detection For An...
  • Convenient & Powerful Valucount Uses The Selected Single Denomination To Calculate The Total Monetary Value Of Bills Counted. Please Note That The...
  • User Friendly & Innovative Innovative Touch Control Panel And Large 2.8'' Tft Screen Allow For Easy Navigating And Full Counting Report.
  • Accurate & Precise Detection Ultraviolet And Magnetic Sensors Check For Suspect Bills And Stop Counting With A Clear Alert Message If A Suspect Bill...

Having trouble finding a great counterfeit bill detectors?

This problem is well understood by us because we have gone through the entire counterfeit bill detectors research process ourselves, which is why we have put together a comprehensive list of the best counterfeit bill detectorss available in the market today.

After hours of searching and using all the models on the market, we have found the best counterfeit bill detectors for 2023. See our ranking below!

How Do You Buy The Best Counterfeit Bill Detectors?

Do you get stressed out thinking about shopping for a great counterfeit bill detectors? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching counterfeit bill detectors, which is why we have assembled a comprehensive list of the greatest counterfeit bill detectors available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for counterfeit bill detectors that you consider buying. Your questions might include the following:

  • Is it worth buying an counterfeit bill detectors?
  • What benefits are there with buying an counterfeit bill detectors?
  • What factors deserve consideration when shopping for an effective counterfeit bill detectors?
  • Why is it crucial to invest in any counterfeit bill detectors, much less the best one?
  • Which counterfeit bill detectors are good in the current market?
  • Where can you find information like this about counterfeit bill detectors?

We’re convinced that you likely have far more questions than just these regarding counterfeit bill detectors, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for counterfeit bill detectors, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible counterfeit bill detectors. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an counterfeit bill detectors buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available counterfeit bill detectors currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of counterfeit bill detectors has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an counterfeit bill detectors?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your counterfeit bill detectors.
  5. Customer Ratings: Number ratings grade counterfeit bill detectors objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their counterfeit bill detectors.
  7. Product Quality: You don’t always get what you pay for with an counterfeit bill detectors, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an counterfeit bill detectors is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining counterfeit bill detectors information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding counterfeit bill detectors is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

FAQ:

Q: How to detect a counterfeit dollar bill?

A: – “FIFTY,” “USA,” and “50” are printed inside two of the blue stars to the left of the portrait – “FIFTY” is repeated within both side borders of the note – “THE UNITED STATES OF AMERICA” is printed in President Grant’s collar

Q: How do you detect counterfeit bills?

A: – $5 – Right side. Glows blue under UV light and a fake 5 dollar bill will not glow. – $10 – Right side. Glows orange under UV light and a fake 10 dollar bill will not glow. – $20 – Far left hand side. Glows green under UV light and a fake 20 dollar bill will not glow – $50 – Right side near the middle. … – $100 – On left side. …

Q: How do banknote counters detect counterfeit bills?

A: Bill counters that have counterfeit-detection technology can save you a great deal of time. The following are the three main ways a bill counter checks for counterfeit bills. Ultraviolet light: Ultraviolet (blacklight) is a frequency on the electromagnetic spectrum that is too short to be seen by the naked eye. Ultraviolet counterfeit detection …

Q: What are the best CO detectors?

A: 0.5-50 ppm: These levels are seen as low and would take about eight hours of continuous exposure for the toxic effects of CO to appear. … 50 – 150 ppm: Above 50 ppm,exposure becomes more serious and requires immediate evacuation. … 150+ppm: These levels are poisonous and require medical attention. …

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