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    • Top Sellers

    HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy $35.00 B0002T6L5M
    E-Z Red SP101 Battery Hydrometer $10.19 B000JFHMRU
    Oakton EcoTestr pH 2 Waterproof pH Tester, 0.0 to 14.0 pH Range $61.75 B004G8PWAU
    Digital PH Meter PH-009 Pocket Size Water Quality pH Tester for Household Drinking Water, Hydroponics, Aquariums, Swimming Pools - Extra Two Packs of PH Calibration Solution Mixture $11.99 B00N7432II
    Brew Tapper Triple Scale Hydrometer for Beer, Wine, Mead & Kombucha - Specific Gravity ABV Tester $32.99 B00TUQIBG0
    CoZroom Pocket Size pH Meter with ATC and Backlit LCD, 0.05pH High Accuracy, 0-14 pH Measurement Range, 0.01 Resolution Handheld, Measure Household Drinking Water(Red) B00W4PH6OC
    PH Pen Tester,THZY High Accuracy Pocket Size PH Meter with ATC (Automatic Temperature Compensation) Backlit Light LCD 0-14 pH Measurement Range, 0.01 Resolution Handheld pH Pen Tester $17.99 B00XN4111W
    Jellas Pocket Size pH Meter Digital Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums, Hydroponics, pH Measurement for 0-14.0 pH, ± 0.1 Accuracy, 0.1 Resolution.(Yellow) B00YBUH4RC
    HOLDPEAK 866B Digital Anemometer Handheld Wind Speed Meter for Measuring Wind Speed, Temperature and Wind Chill with Backlight and Max/Min $25.99 B00ZHKWCP4
    HYDROMETER - ALCOHOL, 0-200 PROOF and Tralle ★★★★☆ 1627 $6.99 B013S1VAM4
    Digital pH Meter - Pocket Size - pH Pen Tests Household Drinking Water, Aquarium, Swimming Pools, Hydroponics, Water Quality, with ATC, 0-14 pH Measuring Range with 6X pH Buffer Powders. Purple B018J40IKU

    New Releases

    Signstek DSO213 Handheld Digital Oscilloscope with 4 Channels, 15MHz $209.99 B019R7790A
    Kuman Oscilloscope, 20Mhz Bandwidth Dual-Channel PC Based USB Digital Storage Virtual Oscilloscope, Spectrum Analyzer, Data Recorder with Portable Design (DS203) B01ABWNUZS
    Homebrew Guys Best Value Refractometer Kit (0-32 BRIX) with Automatic Temperature Compensation. Easily Measure Sugar levels of Juice, Home Brewing Beer and Wine Making. Complete with all Accessories $27.99 B01AHKZZDE
    Etekcity 2011 Plus Digital pH Meter High Accuracy Water Pen Tester Pocket Size Design with ATC (Automatic Temperature Compensation), 0-14 pH Measurement Range $49.99 B01AI10NQ6
    Homdox Portable pH Tester High Accuracy Handheld pH Meter Yellow with 2xpH Buffer Powders $21.99 B01ALI1EH8
    Homdox Portable pH Tester High Accuracy Handheld pH Meter Red with 2xpH Buffer Powders $21.99 B01ALI1GDK
    Brew Tapper Dual Scale Refractometer with ATC | Brix & Specific Gravity | Best for Beer & Wine $49.99 B01APP1EXG
    Handheld Oscilloscopes DSO Quad - Aluminium Alloy Silver B01AQ9HYOY
    Umiin Automatic Calibration Digital pH Meter with ATC,Water Quality Tester 0.01pH High Accuracy, 0.00-14.00 Measurement Range, 0.01 Resolution Measure Handheld PH Pen Tester $25.99 B01AQRTCH8
    Umiin 0.05pH High Accuracy Pocket Size Digital PH Meter Tester with ATC and Backlit LCD,Yellow $39.99 B01AS2C2GE
    Hanna Checker Handheld Colorimeter, Free Chlorine Refill $29.00 B01ATSKYTO
    B01AV1R81Q B01AV1R81Q

    Most Gifted

    HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy $35.00 B0002T6L5M
    Fluke TL175 Twistguard Test Leads, 2 mm Diameter Probe Tips $21.88 B005CTI592
    American Educational Corrosion-Resistant Cup Anemometer, with Revolving Wind Cups $11.73 B005QDQ2JE
    Ade Advanced Optics BCBI9177 Beer Wort and Wine Refractometer, Dual Scale - Specific Gravity 1.000-1.120 and Brix 0-32%, Replaces Homebrew Hydrometer (Aluminum) $50.99 B00AOCKWMU
    EISCO Premium Quantitative Spectroscope, +/- 5nm Accuracy $15.99 B00B84DGDA
    Etekcity pH-009 Digital Pocket-Sized Pen Type pH Meter, Mini Water Quality Tester, pH 0.0 - 14.0 Measuring Range, 0.1pH Resolution $11.90 B00CH3QZSE
    Etekcity Digital Handheld TDS Meter , +/- 2% High Accuracy, 0-9990 ppm (Blue) B00EQGX2WC
    Naruekrit R3-XIKQ-AD0G Proof and Tralle Hydrometer with 12' Glass Test Jar B00FDOHMHM
    Hydrometer - This is a Triple Scale Hydrometer for Home Brewing - Beer and Wine Making - Test Density, Alcohol and Brix - Guaranteed Accurate $8.99 B00GGJ4X9S
    Dr.meter 0.1pH PH002 High Accuracy pH Meter/pH Pen Tester with ATC LCD 0-14 pH Measurement Range (PH002 pH Meter for Water) B00PU0W35K
    Brew Tapper Triple Scale Hydrometer for Beer, Wine, Mead & Kombucha - Specific Gravity ABV Tester $32.99 B00TUQIBG0
    HYDROMETER - ALCOHOL, 0-200 PROOF and Tralle ★★★★☆ 1627 $6.99 B013S1VAM4
    Etekcity 2011 Plus Digital pH Meter High Accuracy Water Pen Tester Pocket Size Design with ATC (Automatic Temperature Compensation), 0-14 pH Measurement Range $49.99 B01AI10NQ6