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Amazon Best Sellers
Our most popular products based on sales. Updated hourly.
Best Sellers in
Substance Analysis Instrumentation
#1
pH Test Strips for Testing Alkaline and Acid Levels in The Body. Track & Monitor Your pH Level Using Saliva and Urine. Get Highly Accurate Results in Seconds.
4.3 out of 5 stars
6,308
$10.95
#2
Water Quality Tester, Accurate and Reliable, HoneForest TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.
4.4 out of 5 stars
6,391
$14.97
#3
TENS/EMS Unit 20 Snap Tens Unit Electrode Pads Large Premium Replacement Tens Electrodes Reusable up to 25 Times per Electrode Med X Tens
4.5 out of 5 stars
9,509
$10.99
#4
TENS Electrodes, Super Value 20 Replacement Electrode Pads for TENS Units, Snap TENS Unit Electrodes
4.7 out of 5 stars
3,643
$9.25
#5
3 Pack pH.1-14 Test Paper Extensive Test Paper Litmus Test Paper 240 Strips pH Test with Storage Case for Saliva Urine Water Soil Testing Pet Food and Diet pH Monitoring (3 Pack with Storage Case)
4.3 out of 5 stars
467
$6.99
#6
17 in 1 Premium Drinking Water Test Kit - 100 Strips + 2 Bacteria Tests - Home Water Quality Test - Well and Tap Water - Easy Testing for Lead, Bacteria, Hardness, Fluoride, pH, Iron, Copper and more!
4.3 out of 5 stars
1,067
$25.99
#7
Digital PH Meter, PH Meter 0.01 High-Precision Pocket Water Quality Tester, PH Range 0-14, Suitable for Accurate Testing of Drinking Water, Aquariums, Swimming Pools, Hydroponics
4.8 out of 5 stars
2,825
$13.99
#8
Bluelab PENCON Conductivity Pen Fully Waterproof Pocket Tester, CF, EC, PPM 500, PPM 700
4.5 out of 5 stars
1,776
$71.99
-
$185.00
#9
Ph. 1-14 Test Paper Extensive Test Paper Litmus Test Paper Sonkir pH Test Strips,Test pH for Saliva Urine Water Soil Testing(2-Pack pH Test Strips)
4.2 out of 5 stars
2,170
$4.98
#10
Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
4.6 out of 5 stars
3,019
$49.75
-
$51.57
#11
PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Yellow)
3.9 out of 5 stars
328
$13.99
#12
North Mountain Supply - NMSPT-H Glass Hydrometer - Alcoholmeter 0-200 Proof & 0-100 Tralle
4.5 out of 5 stars
1,014
$8.99
#13
Universal pH Test Paper Strips pH Test Strips Roll, pH Measure Full Range 0-14,16.4 ft/Roll (2 Rolls)
4.3 out of 5 stars
2,113
$6.59
-
$9.99
#14
PH Meter, TDS PPM Meter, Soil PH Tester, PH/EC Digital Kit, 3 Pack
4.5 out of 5 stars
1,937
$28.99
#15
Brix Refractometer with ATC, Dual Scale - Specific Gravity & Brix, Hydrometer in Wine Making and Beer Brewing, Homebrew Kit
4.5 out of 5 stars
629
$17.99
#16
Watersafe Drinking Water Test Kit - World's Most Sensitive Lead Test - 10-Parameters Detected in Tap & Well Water, Water Filters - Easy Test Strips for Lead, Pesticides, Bacteria, Hardness, and More
4.4 out of 5 stars
1,617
$24.94
-
$74.90
#17
NURSAL 20 Pack Electrodes Snap TENS Replacement Pads (not fit for NURSAL Blue TENS)Compatible with TENS Unit Muscle Stimulators Reuse More Than 30 Times
4.6 out of 5 stars
2,136
$11.99
#18
DONECO TENS Unit Pads 2X2 48 Pcs Replacement Pads Electrode Patches for Electrotherapy
4.7 out of 5 stars
3,703
$18.99
#19
pH Test Strips 0 to 14 (200 ct) for Urine, Saliva, Drinking Water, Kombucha, Pool, Spa, Hotub, Soap, & Liquids. pH Acid Alkaline Universal Test Strips. Acidity Alkalinity Litmus Paper Testing Strips
4.2 out of 5 stars
1,716
$9.91
#20
Digital PH Meter,Backlight PH Meter 0.01 High Precision Water Quality Tester, PH Range is 0-14, Suitable for Drinking Water Swimming Pool and Aquarium PH Tester Design, with ATC
4.2 out of 5 stars
318
$12.99
#21
Med Lab Diagnostics pH Test Strips 200 ct for Urine and Saliva Body pH Testing. Urinalysis Reagent Test Strips for Body Acidity and Alkalinity. Food and Diet pH Monitoring
4.4 out of 5 stars
3,287
$9.79
#22
10 Pieces Large Electrode Pads for TENS Unit Replacement Pads for TENS Machine
4.4 out of 5 stars
713
$7.99
#23
Dr.meter Upgraded PH838 0.01 Resolution High Accuracy Backlit Two-Color LCD Display pH Meter with ATC, 0-14pH Measurement Range with Data Hold Function
4.3 out of 5 stars
638
$32.99
#24
TDS Meter Digital Water Tester, DUMSAMKER Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More
4.5 out of 5 stars
2,143
$13.99
#25
VIVOSUN PH Meter Digital PH Tester Pen for Water
3.9 out of 5 stars
2,293
$13.99
#26
16 in 1 Drinking Water Test Kit | Water Test Strips for Aquarium, Pool, Spa, Well & Tap Water | High Sensitivity Test Strips detect pH, Hardness, Chlorine, Lead, Iron, Copper, Nitrate, Nitrite
4.2 out of 5 stars
1,043
$20.99
#27
TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1)
4.5 out of 5 stars
2,793
$12.97
#28
VIVOSUN pH and TDS Meter Combo, 0.05ph High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter
4.2 out of 5 stars
9,746
$19.99
#29
Digital PH Meter, PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium Water PH Tester Design with ATC
4.1 out of 5 stars
2,409
$11.89
#30
pH Test Strips to Monitor Body Alkaline and Acid Levels, Saliva and Urine Dip-Stick Tester kit for Men and Women, Urinalysis Reagent pH Balance Testing Kit
4.4 out of 5 stars
750
$6.95
#31
Hydrion QT-40 Quaternary Sanitizer Test Tape 15 feet Roll Quat Color Chart 0-500 ppm Range
4.6 out of 5 stars
619
$9.69
#32
Digital PH Meter, PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium Water PH Tester Design with ATC
3.5 out of 5 stars
131
$11.99
#33
TDS Meter Digital Water Tester - ppm Meter, EC & Temperature Test Pen 3-in-1 | Easy to Use Water Quality Tester | Ideal for Testing RO Drinking Water Hydroponics Aquarium Swimming Pool & More | White
4.4 out of 5 stars
2,016
$13.97
#34
Syrtenty TENS Unit Pads 1" Round 8 pcs Electrodes
4.2 out of 5 stars
947
$8.49
-
$19.99
#35
Total Water Hardness Test Strips. Each Strip Best and Reliable for Home Testing Pool, Spa, Aquarium, Drinking Water, Well. Easy to Compare Color Chart. Dip for Quality Accurate Results in Seconds.
4.3 out of 5 stars
829
$9.95
#36
Chefast Hydrometer and Glass Test Jar for Wine, Beer, Mead and Kombucha - Combo Set of Brewing Hydrometer, Alcohol Test Tube, Cleaning Brush, Cloth and Storage Bag - ABV, Brix and Gravity Tester Kit
4.5 out of 5 stars
3,128
$19.49
-
$26.59
#37
PH Meter, PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range, TDS Meter for Water/Brewing/Food/Soil/Sauce/Laboratory, Digital PH Tester
4.1 out of 5 stars
8,089
$13.99
-
$18.99
#38
Hydrometer Alcohol Meter Test Kit: Distilled Alcohol American-Made 0-200 Proof Pro Series Traceable Alcoholmeter Tester Set with Glass Jar for Proofing Distilled Spirits
4.7 out of 5 stars
1,108
$39.99
#39
Litmus pH Test Strips, Universal Application (pH 1-14), 2 Packs of 100 Strips
4.2 out of 5 stars
3,650
$4.74
-
$5.51
#40
Phenylthiourea (PTC) Paper Strips - Genetic Taste Testing (Vial of 100) - 30µg Per Strip
4.5 out of 5 stars
662
$4.70
#41
Plastic pH Test Strips, Universal Application (pH 0-14), 100 Strips
4.3 out of 5 stars
1,067
$7.22
#42
Hydrion Ph Paper (93) with Dispenser and Color Chart - Full Range Insta Chek ph- 0-13
4.4 out of 5 stars
850
$8.25
-
$8.59
#43
DONECO Omron Compatible TENS Electrodes - 10 (5 Pair) Premium Omron Compatible Replacement Pads for TENS Units
4.6 out of 5 stars
647
$16.99
#44
DONECO TENS Unit Pads 2X4 20 Pcs Replacement Pads Electrode Patches for Electrotherapy
4.6 out of 5 stars
1,082
$17.99
#45
4 Packs of pH Test Strips, Wide-Range 1-14, Litmus Paper, for Water, Drinks, Vinegar, Saliva, Urine, Cosmetic Solutions, Soap, Fish Tank, Pool (320 Strips)
4.3 out of 5 stars
77
$5.99
#46
THINK ALKALINE A2O Water - Made in USA, Water pH Test Liquid (WHT/100-125 Tests)
4.6 out of 5 stars
1,417
$9.75
#47
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
1,160
$11.98
-
$20.99
#48
The FryOilSaver Co, Chlorine Test Strips for Restaurants and Food Service, Precision Chlorine Test Paper, 1 x Vial of 100 Chlorine Sanitizer Test Strips, 0-200 ppm, Bleach Test Strips, FMP 142-1362.
4.7 out of 5 stars
451
$6.80
-
$17.00
#49
pH Test Strips for Kombucha Brewing 0-6 (0.5 Intervals) 100pc Kit
4.7 out of 5 stars
930
$7.95
#50
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
1,240
$11.99
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