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Amazon Best Sellers
Our most popular products based on sales. Updated hourly.
Best Sellers in
Substance Analysis Instrumentation
#51
pH Test Strips for Kombucha Brewing 0-6 (0.5 Intervals) 100pc Kit
4.7 out of 5 stars
892
$7.95
#52
General Hydroponics HGC722145 pH Test Indicator, 1-Ounce
4.7 out of 5 stars
893
$9.72
-
$15.99
#53
Digital PH Meter Tester Kit, High Accuracy Pocket Size PH Meter for Water, Digital ph Test Pen with 0-14 PH Measurement Range for Household Drinking Water, Aquarium, Swimming Pools
4.0 out of 5 stars
706
$12.99
#54
Micro Essential Laboratory QT-10 Plastic Hydrion Low Range Quat Check Test Paper Dispenser, Single Roll, Food Service Test Strips, 0 - 400ppm
4.6 out of 5 stars
396
$6.04
#55
JNW Direct pH Test Strips for Urine and Saliva Body pH Testing, 150 Count, Fast Easy and Accurate with Free Mobile App, Monitor Alkaline and Acid Levels in Body (Packaging May Vary)
4.3 out of 5 stars
774
$7.95
#56
VIVOSUN 3-in-1 Digital pH Meter with ATC, ±0.1 pH Accuracy, 0-14.0 pH Measurement Range
4.0 out of 5 stars
607
$39.99
-
$42.99
#57
Aquatic Experts AccuBrate Refractometer and Hydrometer Salinity Calibration Fluid – Solution to Accurately Calibrate Refractometer and Hydrometer for Testing Natural Saltwater or Synthetic Sea Water
4.8 out of 5 stars
220
$8.99
-
$14.99
#58
EISCO - PH100QA Premium Quantitative Spectroscope, +/- 5nm Accuracy
4.3 out of 5 stars
225
$9.00
#59
eSeasonGear SALT-3050 Waterproof IP65 Meter, Digital Salinity PPM Temperature Tester for Salt Water Pool and Koi Fish Pond
4.4 out of 5 stars
993
$45.99
#60
Glass Hydrometer Test Tube Jar & Cylinder Brush - Narrow Flask for Alcohol Testing Moonshine, Homebrew Beer, Home Wine Making Kits, Borosilicate Glass 3.3
4.8 out of 5 stars
656
$14.97
#61
Wiztech Digital PH Meter with ATC: 3 in 1 PH TDS Temp - High Accuracy Pocket Size Water Quality Tester for Drinking Water, Pool, Lab, Food Processing, Aquarium, Pond, Beer Brewing, Kombucha
4.0 out of 5 stars
559
$37.99
#62
American-Made Alcohol Hydrometer Tester 0-200 Proof & Tralle Pro Series Traceable - Distilling Moonshine Alcoholmeter
4.6 out of 5 stars
623
$28.95
#63
TENS Unit Pads, 40 Pcs 2x3.5 Inches TENS Unit Replacement Pads, Large Rectangular Electrodes Pads for Electrotherapy EMS Massager
4.7 out of 5 stars
508
$23.99
#64
DAE AS250U-100P 1" Water Meter with Pulse Output, Measuring in Gallon + Coupling
4.5 out of 5 stars
360
$32.99
-
$179.99
#65
Brewer's Elite Hydrometer & Test Jar Combo, Hardcase, Bag, Brush & Cloth - Triple Scale Specific Gravity ABV Tester- for Wine, Beer, Mead and Kombucha
4.6 out of 5 stars
1,600
$19.95
#66
PH Tester Digital PH Meter, Hofun Professional PH Pen with 0.01 PH High Accuracy, 0-14 PH Measurement Range, Ideal Water PH Tester for Household Drinking, Pool and Aquarium(Yellow)
4.2 out of 5 stars
63
$12.95
#67
Hanna Marine Alkalinity (dKH) Checker HC - HI772
4.7 out of 5 stars
352
$49.75
-
$79.88
#68
Toolazy Digital PH Meter,High Accuracy Water Quality Tester with 0-14 PH Range for Household Drinking, Hydroponics,Aquarium,Brewing,Laboratory,Pool,PH Pen Tester Kit with ATC,0.01 Resolution
4.1 out of 5 stars
96
$3.99
-
$9.99
#69
Litmus pH Test Strips, Universal Application (pH 1-14), 2 Packs of 100 Strips
4.2 out of 5 stars
3,604
$4.74
-
$5.51
#70
Super Taster Test Genetics Lab Kit with Instructions, Phenylthiourea (PTC), Sodium Benzoate, Thiourea and Control [Each Vial Includes 100 Paper Strips]
4.6 out of 5 stars
161
$16.39
#71
Syrtenty TENS Unit Pads 4.5"x6" - 5 pcs Electrodes
4.6 out of 5 stars
964
#72
Litmus pH Test Strips ph Paper| (pH 1-14),2 Packs of 160 Strips. Bonus 1 x 0.2ml Plastic Eye Dropper, Test and Track Your Water, Diet, Pool, Aquarium and Soil
4.6 out of 5 stars
56
$4.22
-
$4.88
#73
KINCREA TDS Water Quality Tester,Accurate TDS, EC & Temperature Meter 3 in 1,0-9999 ppm with ± 2% Accuracy,Digital TDS Meter for Drinking Water Test,Aquarium Test,Swimming Pool,Hydroponics,RO/DI Water
4.3 out of 5 stars
482
$12.99
#74
Calculated Industries 7440 AccuMASTER XT Digital Moisture Meter | Handheld |Pin Type | Backlit LCD Display | Detects Leaks, Damp and Moisture in Wood, Walls, Ceilings, Carpet and Firewood
4.5 out of 5 stars
407
$29.40
#75
4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid
4.7 out of 5 stars
166
$21.99
#76
PH Meter Digital Water Tester, 0.01High Accuracy Water Quality Tester Pen with 0-14 PH Measurement Range for Drinking Water (Yellow)
3.8 out of 5 stars
339
$10.99
#77
DONECO TENS Unit 24 Snap Tens Unit Electrode Pads Large Premium Tens Electrodes Reusable up to 20-30 Times per Electrode
4.6 out of 5 stars
1,200
$11.99
#78
GroTheory PH Meter and TDS Meter Combo, PH Tester Digital, PPM Digital Water Tester, 0.05ph High Accuracy Pen Type pH Meter, Readout Accuracy 3-in-1 TDS EC Temperature Meter
4.1 out of 5 stars
407
$15.99
#79
TDS Meter, Water Quality Tester Filter Pen, Accuracy Testing Water Quality for Drinking Water Purity Test, Swimming Pools, Aquariums, Etc.
4.5 out of 5 stars
306
$5.99
#80
PH Meter, TDS/PPM/EC Meters for Hydroponics with 0-14 PH Measurement Range, 0.01 PH High Accuracy PH Reader for Water/Brewing/Food/Soil/Sauce/Laboratory, Water PH Tester Digital
4.0 out of 5 stars
241
$11.99
#81
General Hydroponics GH1516 Indicator Fertilizer, 8-Ounce, Purple ph-Test-Strips, Natural
4.8 out of 5 stars
673
$12.29
-
$27.99
#82
pH Test Strips 0-14, 0.5 Accuracy 100ct, Esee pH Strips pH Test Paper to Test Drinking Water, Food, Pools, Aquariums, Monitor Body pH Levels for Alkaline & Acid Using Saliva and Urine
4.0 out of 5 stars
481
$9.99
#83
Little Giant Sap Hydrometer Test Cup Sap Processing Equipment for Maple Syrup Making (Item No. HYDROCUP)
4.8 out of 5 stars
77
$21.08
#84
14" Plastic Hydrometer Test Jar
4.3 out of 5 stars
215
$4.39
-
$114.40
#85
pH Test Strips 125ct - Tests Body pH Levels for Alkaline & Acid Levels Using Saliva and Urine. Track and Monitor Your pH Balance & A Healthy Diet, Get Accurate Results in Seconds. pH Scale 4.5-9.0
4.4 out of 5 stars
369
$7.99
#86
PH Meter with Automatic Calibration - 7Pros High Accuracy Pen Type Water Quality Tester with built-in ATC, 6 pH Calibration Packets, Best Tool to test PH of Hydroponics, Kombucha, Wine, Drinking Water
4.0 out of 5 stars
639
$16.99
#87
Honey Refractometer for Honey Moisture, Brix and Baume, 3-in-1 Uses, 58-90% Brix Scale Range Honey Moisture Tester, with ATC, Ideal for Honey, Maple Syrup, and Molasses, Bee Keeping Supplies
4.7 out of 5 stars
625
$23.99
#88
Quantadose UVC Light Test Card with UVC Light Wavelength Indicator and Intensity Test
4.6 out of 5 stars
171
$11.11
#89
Digital pH Meter, Water PH Test Meter with 0.00-14.00ph Measure Range/PH Meter with ATC,Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums,Hydroponics
4.1 out of 5 stars
486
$11.99
#90
KETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0.00-14.00ph Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0.01 PH Pen Tester…
4.1 out of 5 stars
1,127
$12.99
-
$20.99
#91
Speakeasy Distillers - Glass Proofing Parrot with Alcohol Hyrdrometer Tester 0-200 Proof & Tralle, Alcoholmeter Made in Scotland, Home Brewing DIY Moonshine Still Kit Accessories
4.2 out of 5 stars
68
$35.99
#92
[150 Strips] Restaurant Chlorine Test Paper, 10-250 ppm (Value Pack) Instant Result in 1 Second (150)
4.6 out of 5 stars
86
$8.99
#93
Apera Instruments SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC
4.2 out of 5 stars
483
$54.26
-
$98.67
#94
LYINIE Omron Compatible TENS Electrodes - 12 (6 Pair) Premium Omron Compatible Replacement Pads for TENS Units
4.6 out of 5 stars
39
$16.99
#95
Maple Syrup Hydrometer - Measure Sugar and Moisture Content (Density) of Boiled Sap - Baume and Brix Scale - Calibrated to Create Pure Maple Syrup
4.4 out of 5 stars
76
$19.99
#96
PH Meter, TDS PPM Meter, Soil PH Tester, PH/EC Digital Kit, 3 Pack
4.5 out of 5 stars
2,095
$24.99
#97
TDS Meter Digital Water Tester,AMMZO Professional Water Meter,4 in 1, PPM Meter EC Meter,Temperature, for Drinking Water Home Aquarium and More.(Yellow)
4.7 out of 5 stars
112
$8.19
-
$8.59
#98
Micro Essential Lab CM-240 Hydrion Chlorine Dispenser 10-200 PPM Test Roll Plus Extra Roll 200 Tests
4.7 out of 5 stars
331
$6.25
-
$11.14
#99
16 in 1 Drinking Water Test Kit - Professional Spa Test Strips, Pool Test Strips with PH, Hardness, Mercury, Lead, Iron, Copper, Chlorine, Chromium/Cr, Cyanuric Acid Test Kit
4.6 out of 5 stars
3
$14.95
#100
VIVOSUN PH Meter Soil Tester Combo, Digital PH Water Tester and 3-in-1 Plant Moisture Light PH Meter for Garden
4.0 out of 5 stars
2
$21.99
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