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Safety Equipment and GearAir QualityAir ToolsAlarm SystemsAll Garage StorageAll Home SecurityAll Tool SetsBathroom Cabinets & FixturesBathroom PlumbingCable ManagementCarbon Monoxide AlarmsCommercial LightingDoor HardwareDoor Security HardwareDoor WeatherproofingElectrical ToolsElectronic Communication ComponentsEmergency SuppliesEvaporative Coolers and PartsExtension Cord ReelsFastenersFire SafetyFlashlightsGarage CabinetsGarage Storage SystemsGuttering & DrainageHand ToolsHome SafetyHooksKitchen PlumbingLight BulbsMechanics ToolsPadlocksPaint Supplies & ToolsPersonal PreparednessPersonal Protective EquipmentPersonal SafetyPlug AdaptersPower Tool AccessoriesPower ToolsProjectsRoofingSafes & LockboxesSafety DetectorsStorm & Flood PrepTestersTool Equipment & StorageWall OrganizationWater FiltersWater Filtration & Water SoftenersWeatherproof CoversWeatherstrippingWelding & Cutting AccessoriesWildfire PrepWinter Prep
Measure Concentration(19)
Uses item details. Price when purchased online
Deal TOPTES PT210S Natural Gas Leak Detector with 4-inch Probe. Detector for Natural Gas, Propane, Methane, and LPG, Measures Gas Concentration (%LEL), for Home Use $26.99 Was $36.99
Deal
Sponsored
Now$2699
current price Now $26.99, Was $36.99$36.99
TOPTES PT210S Natural Gas Leak Detector with 4-inch Probe. Detector for Natural Gas, Propane, Methane, and LPG, Measures Gas Concentration (%LEL), for Home Use
4.8 out of 5 stars
Inkbird Radon Detector, Alpha Spectrometer Sensor, Battery Powered Radon Level Indicator $99.99
Sponsored
$9999
current price $99.99Inkbird Radon Detector, Alpha Spectrometer Sensor, Battery Powered Radon Level Indicator
4 out of 5 stars
VEVOR Radon Detector for Home, 3.3Bq to 37kBq/m³, Radon Meter, Portable Battery Powered Radon & Air Quality Monitor, Color Display,Long-Term Radon Concentration Monitoring,Rechargeable or Wired Use $83.99
Sponsored
$8399
current price $83.99VEVOR Radon Detector for Home, 3.3Bq to 37kBq/m³, Radon Meter, Portable Battery Powered Radon & Air Quality Monitor, Color Display,Long-Term Radon Concentration Monitoring,Rechargeable or Wired Use
4 out of 5 stars
Bromothymol Blue Indicator Reagent Powder | High-Purity pH Indicator - 10 Grams $19.99
Sponsored
$1999
current price $19.99Bromothymol Blue Indicator Reagent Powder | High-Purity pH Indicator - 10 Grams
Deal TOPTES PT210S Natural Gas Leak Detector with 4-inch Probe. Detector for Natural Gas, Propane, Methane, and LPG, Measures Gas Concentration (%LEL), for Home Use $26.99 Was $36.99
Deal
Now$2699
current price Now $26.99, Was $36.99$36.99
TOPTES PT210S Natural Gas Leak Detector with 4-inch Probe. Detector for Natural Gas, Propane, Methane, and LPG, Measures Gas Concentration (%LEL), for Home Use
4.8 out of 5 stars
Portable Oxygen Meter O2 Concentration Detector with Sound Light Vibration Alarm Multi Gas Analyzer (4.7 x 2.5 x 1.0 inches / 12 x 6.5 x 2.5 cm) $73.85
$7385
current price $73.85Portable Oxygen Meter O2 Concentration Detector with Sound Light Vibration Alarm Multi Gas Analyzer (4.7 x 2.5 x 1.0 inches / 12 x 6.5 x 2.5 cm)
Reduced price Radon Detections Device Easy To Read Display Desktop Radon Concentration Analyzers $106.49 Was $129.90
Reduced price
Now$10649
current price Now $106.49, Was $129.90$129.90
Radon Detections Device Easy To Read Display Desktop Radon Concentration Analyzers
Radon Detector Handheld Analytical Tool For Monitoring Radon Concentration In Air Historical Average $119.53
$11953
current price $119.53Radon Detector Handheld Analytical Tool For Monitoring Radon Concentration In Air Historical Average
Oioii Intelligent Carbon Dioxide Detector, High Precision Gas Concentration Content Tester, Color Screen Display for Home Greenhouse Warehouse Indoor Air Monitor,White
Oioii Intelligent Carbon Dioxide Detector, High Precision Gas Concentration Content Tester, Color Screen Display for Home Greenhouse Warehouse Indoor Air Monitor,White
Oxygen Analyzer Professional Portable O2 Oxygen Concentration Meter Detector Flow Pressure Detection Meter Gas Detector $105.74
$10574
current price $105.74Oxygen Analyzer Professional Portable O2 Oxygen Concentration Meter Detector Flow Pressure Detection Meter Gas Detector
4 out of 5 stars
KFFKFF Home Radon Detector, 3.3Bq to 37kBq/m³, Battery Powered Radon & Air Quality Monitor, Color Screen, Extended Radon Level Tracking, Rechargeable or Wired Option $72.99
Sponsored
$7299
current price $72.99KFFKFF Home Radon Detector, 3.3Bq to 37kBq/m³, Battery Powered Radon & Air Quality Monitor, Color Screen, Extended Radon Level Tracking, Rechargeable or Wired Option
3.7 out of 5 stars
ZOHAN 032 Kids Hearing Protection Earmuffs – 25dB NRR Noise Canceling Headphones for Monster Jam , School, Fireworks, Travel, Concert, Autism – Pink From $14.99
Sponsored
From$1499
ZOHAN 032 Kids Hearing Protection Earmuffs – 25dB NRR Noise Canceling Headphones for Monster Jam , School, Fireworks, Travel, Concert, Autism – Pink
4.7 out of 5 stars
Gas Detector NH3 Meter Tester Gas Analyzers Air Detector Ammonia Concentration Tester $406.48 Was $470.90
Now$40648
current price Now $406.48, Was $470.90$470.90
Gas Detector NH3 Meter Tester Gas Analyzers Air Detector Ammonia Concentration Tester
VEVOR Radon Detector for Home, 3.3Bq to 37kBq/m, Radon Meter, Portable Battery Powered Radon & Air Quality Monitor, Color Display,Long-Term Radon Concentration Monitoring,Rechargeable or Wired Use $83.99
$8399
current price $83.99VEVOR Radon Detector for Home, 3.3Bq to 37kBq/m, Radon Meter, Portable Battery Powered Radon & Air Quality Monitor, Color Display,Long-Term Radon Concentration Monitoring,Rechargeable or Wired Use
4 out of 5 stars
Portable Pump Suction Detector, Oxygen Ammonia Gas VOC Analyzer, Carbon Dioxide Concentration Detector ,Multifunction Monitoring From $147.87
2 options
Available in additional 2 optionsFrom$14787
Portable Pump Suction Detector, Oxygen Ammonia Gas VOC Analyzer, Carbon Dioxide Concentration Detector ,Multifunction Monitoring
Oxygen Analyzer Professional Portable O2 Oxygen Concentration Meter Detector Pressure Detection Meter Gas Detector $107.89
$10789
current price $107.89Oxygen Analyzer Professional Portable O2 Oxygen Concentration Meter Detector Pressure Detection Meter Gas Detector
MOMOJIA Lightweight Gas Detection Device Build In Alarm Systems Air Quality Analyzers ABS $61.22
$6122
current price $61.22MOMOJIA Lightweight Gas Detection Device Build In Alarm Systems Air Quality Analyzers ABS
Digital Sugar Refractometer ( BRIX ) With protective case $259.33
$25933
current price $259.33Digital Sugar Refractometer ( BRIX ) With protective case
Titan Fitness Loadable Thor Hammer, 5 LB Unfilled, Workout Hammer Strength Training Gym Equipment, Rotational and Functional Training, Improves Grip and Full Body Workout $63.22
Sponsored
$6322
current price $63.22Titan Fitness Loadable Thor Hammer, 5 LB Unfilled, Workout Hammer Strength Training Gym Equipment, Rotational and Functional Training, Improves Grip and Full Body Workout
5 out of 5 stars
Other options to consider(236)
NFTIGB PM2.5 PM10 High Precision Air Particle Concentration Laser Dust Detection Sensor SDS011 Module with USB to TTL Cable Reliable Monitor $39.75
$3975
current price $39.75NFTIGB PM2.5 PM10 High Precision Air Particle Concentration Laser Dust Detection Sensor SDS011 Module with USB to TTL Cable Reliable Monitor
VORALYN 2026 New Portable 3-In-1 Co Detector | Handheld Carbon Monoxide Sensor | Monitors Co2 Concentration, Temperature & Humidity | Compact, Rechargeable | Home Car Rv | 85X51X17Mm $27.40
$2740
current price $27.40VORALYN 2026 New Portable 3-In-1 Co Detector | Handheld Carbon Monoxide Sensor | Monitors Co2 Concentration, Temperature & Humidity | Compact, Rechargeable | Home Car Rv | 85X51X17Mm
Carbon dioxide regulator Pressure gauge flowmeter Carbon Dioxide Controller CO2 Concentration Control $57.49
$5749
current price $57.49Carbon dioxide regulator Pressure gauge flowmeter Carbon Dioxide Controller CO2 Concentration Control
Air Quality Carbon Dioxide Meter PCE-WMM 50 $700.00 Was $750.00
Now$70000
current price Now $700.00, Was $750.00$750.00
Air Quality Carbon Dioxide Meter PCE-WMM 50
LCD Gas Analyzer Tester Meter Automotive Combustible Gas Sensor Air Quality Monitor Gas Leak Detector With Sound Shock Alarm $179.48
$17948
current price $179.48LCD Gas Analyzer Tester Meter Automotive Combustible Gas Sensor Air Quality Monitor Gas Leak Detector With Sound Shock Alarm
Gas tester,Portable Combustible Meter Temperature Test And Test And Sound With Temperature Test Combustible Leak Natural Combustible Tester Combustible Meter With Natural Tester Portable $17.36
$1736
current price $17.36Gas tester,Portable Combustible Meter Temperature Test And Test And Sound With Temperature Test Combustible Leak Natural Combustible Tester Combustible Meter With Natural Tester Portable
Duda Energy Bromophenol Blue Solution 0.1% Concentration in Water, 15 ml From $10.09
5 options
Available in additional 5 optionsFrom$1009
Duda Energy Bromophenol Blue Solution 0.1% Concentration in Water, 15 ml
Dioxide PV28-AW Smart WIFI Mini CO2 Detector, Portable 3-in-1 Indoor Air Quality Monitor, Digital CO2 Temperature Humidity Meter Monitor Carbon Dioxide Detector Measuring Range $44.80
$4480
current price $44.80Dioxide PV28-AW Smart WIFI Mini CO2 Detector, Portable 3-in-1 Indoor Air Quality Monitor, Digital CO2 Temperature Humidity Meter Monitor Carbon Dioxide Detector Measuring Range
Gas tester,With Sound Alarm Combustible Meter With Meter With Sound Handheld Combustible Leak Portable Combustible Meter Leak Natural Tester Sound Alarm Function Natural Tester Portable Black $16.09
$1609
current price $16.09Gas tester,With Sound Alarm Combustible Meter With Meter With Sound Handheld Combustible Leak Portable Combustible Meter Leak Natural Tester Sound Alarm Function Natural Tester Portable Black
Gas Detector PCE-GA 12 $335.75
$33575
current price $335.75Gas Detector PCE-GA 12
Gas Detector, 4 Gas Monitor Meter Analyzer, LCD Display Air Quality Test $159.25 Was $184.49
Now$15925
current price Now $159.25, Was $184.49$184.49
Gas Detector, 4 Gas Monitor Meter Analyzer, LCD Display Air Quality Test
Functional Dexterity Test $129.99
$12999
current price $129.99Functional Dexterity Test
Ammonia Meter,Meter With Lcd Tester 0-100ppm Meter Nh Tester 0-100ppm With Lcd Display 0-100ppm Meter With Handheld Nh Tester Black $155.59
$15559
current price $155.59Ammonia Meter,Meter With Lcd Tester 0-100ppm Meter Nh Tester 0-100ppm With Lcd Display 0-100ppm Meter With Handheld Nh Tester Black
HT66 Gas Leak Detector 50-1000PPM Sound Alarm Mini Household Handheld Combustible Natural Methane Gas Leak Detector $21.12
$2112
current price $21.12HT66 Gas Leak Detector 50-1000PPM Sound Alarm Mini Household Handheld Combustible Natural Methane Gas Leak Detector
Indoor PV28-AW Smart WIFI Mini CO2 Detector, Portable 3-in-1 Indoor Air Quality Monitor, Digital CO2 Temperature Humidity Meter Monitor Carbon Dioxide Detector Measuring Range $38.86
$3886
current price $38.86Indoor PV28-AW Smart WIFI Mini CO2 Detector, Portable 3-in-1 Indoor Air Quality Monitor, Digital CO2 Temperature Humidity Meter Monitor Carbon Dioxide Detector Measuring Range
High Accuracy Ammonia NH3 Gas Leakage Detector 0-100ppm $788.89 Was $842.77
Now$78889
current price Now $788.89, Was $842.77$842.77
High Accuracy Ammonia NH3 Gas Leakage Detector 0-100ppm
BIMZUC Carbon Dioxide Sensor Module CO2 Temperature Humidity Monitor Detection 50ppm Accuracy $33.59 Was $37.80
Now$3359
current price Now $33.59, Was $37.80$37.80
BIMZUC Carbon Dioxide Sensor Module CO2 Temperature Humidity Monitor Detection 50ppm Accuracy
4 In1 Gas Leak Detector Gas Analyzer Air Quality Monitor CO2 Meter $207.97 Was $240.92
Now$20797
current price Now $207.97, Was $240.92$240.92
4 In1 Gas Leak Detector Gas Analyzer Air Quality Monitor CO2 Meter
Storage-Support Air Gas Meter Detector with Handheld Reading Format for Review $123.99
$12399
current price $123.99Storage-Support Air Gas Meter Detector with Handheld Reading Format for Review
MOMOJIA Comprehensive Air Quality Analyzers for CO2 Levels PM2.5 for Schools and Commercial Buildings $72.70
$7270
current price $72.70MOMOJIA Comprehensive Air Quality Analyzers for CO2 Levels PM2.5 for Schools and Commercial Buildings
Carbon dioxide regulator Pressure gauge flowmeter Carbon Dioxide Controller CO2 Concentration Control US plug $58.15
$5815
current price $58.15Carbon dioxide regulator Pressure gauge flowmeter Carbon Dioxide Controller CO2 Concentration Control US plug
Infrared CO2 Meter High Accuracy Clear Air Quality Monitor Indoor Carbon Dioxide Detector Thermometer Hygrometer Alarm 0-50 25-95% RH 400-5000PPM Portable Gas Monitor $38.75
$3875
current price $38.75Infrared CO2 Meter High Accuracy Clear Air Quality Monitor Indoor Carbon Dioxide Detector Thermometer Hygrometer Alarm 0-50 25-95% RH 400-5000PPM Portable Gas Monitor
Co2 PV28-AW Smart WIFI Mini CO2 Detector, Portable 3-in-1 Indoor Air Quality Monitor, Digital CO2 Temperature Humidity Meter Monitor Carbon Dioxide Detector Measuring Range $38.87
$3887
current price $38.87Co2 PV28-AW Smart WIFI Mini CO2 Detector, Portable 3-in-1 Indoor Air Quality Monitor, Digital CO2 Temperature Humidity Meter Monitor Carbon Dioxide Detector Measuring Range
Mavrik - 61913 - Potentiometer $70.54
$7054
current price $70.54Mavrik - 61913 - Potentiometer
Sensor Digital Oxygen Meter O2 Gas Detector Air Quality Meter With Temperature LCD Display From $136.73
From$13673
Sensor Digital Oxygen Meter O2 Gas Detector Air Quality Meter With Temperature LCD Display
Radon Detector Meter, Rechargeable Color LCD Display, 2Bq-20kBq/m $98.98 Was $137.77
Now$9898
current price Now $98.98, Was $137.77$137.77
Radon Detector Meter, Rechargeable Color LCD Display, 2Bq-20kBq/m
11in 4 in 1 Digital CO2 Monitor Sound Level Meter Thermometer Hygrometer Wall Mount Air Quality Tester $91.67
$9167
current price $91.6711in 4 in 1 Digital CO2 Monitor Sound Level Meter Thermometer Hygrometer Wall Mount Air Quality Tester
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