Environmental – Gain Express Wholesale Deals

SLM-390 Decibel Meter with Data Logging function and A / C / Z Weighted Sound Meter Portable SPL Meter MAX/MIN/AVG, Data Hold Use for Home, Factory, Noisy Neighbor

Regular Price $37.90 USD

PHM-295 2-in-1 Combo pH & Temperature Meter Fish Tank Monitor Thermometer Replaceable BNC pH Electrode for Aquariums Hydroponics Aquaculture Laboratory

Regular Price $24.90 USD

$REC-200ATC Tri Scale Clinical Refractometer with ATC 0~12g/100ml Serum protein, 1~1.050, 1.333 ~ 1.360 RI for Human Urine, Serum or Plasma$

REC-200ATC Tri Scale Clinical Refractometer with ATC 0~12g/100ml Serum protein, 1~1.050, 1.333 ~ 1.360 RI for Human Urine, Serum or Plasma

Regular Price $12.90 USD

HTM-49 Gain Express Digital Humidity & Temperature Meter Hygrometer Psychrometer, Dew point and Wet-bulb Temperature range -20~70°C, Humidity range 0~100%RH, Min/Max Hold, LCD Backlight

Regular Price $16.90 USD

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869-0 Waterproof 2-in-1 pH & Temperature Meter, ATC, Digital Water Quality Testing Tester w/ ±0.05pH Accuracy, for Spa, Aquarium, Pool, Laboratory, AquaCulture, Hydroponics

Regular Price $42.90 USD

ECS-23852 0.4 - 4.4EC EC/ppm/CF Nutra-wand / Hydroponic Meter Stick

Regular Price $22.90 USD

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E04-013 Handheld Electromagnetic EMF Waves Level Sensor 15mA-90mA

Regular Price $0.00 USD

SK-30 Skin & Facial Face Moisture Analyzer Monitor Tester LCD

Regular Price $10.90 USD

MAN-37 Digital Manometer with USB Interface, Differential Pressure Gauge, Air Pressure Testing Instrument Tester, 11 Measurement Units

Regular Price $58.58 USD

OZX-300AT O3 Generator w/ Built-in Air Pump Timer, Ozone Output 500mg/hr

From $66.90 USD

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M0198195 Handheld EMF/RF (3-axis Gauss Meter) Field Strength Meter 50MHz to 3.50GHz

Regular Price $93.90 USD

THE-418_1P Digital K-Type Thermocouple Thermometer with Wired and Stainless Steel Probe, High and Low Temperature Measurement for High-Temp Furnaces and Ovens or Low-Temp Liquid Nitrogen etc.

Regular Price $9.90 USD

PAR-414 Full-Spectrum Quantum PAR Meter Waterproof Sensor IP68 for Aquarium Reef Tank Plants PPFD Tester Indoor Plants, Garden, Farm, Hydroponics Photosynthetic Activity

Regular Price $92.90 USD

SNT961W Smart Wifi Natural Gas Alarm Sensor LPG Methane CH4 Combustible Gas Leak Detectors Support Home Smart Life Plug in and Protect

Regular Price $16.90 USD

MAN-277 Digital Manometer Air Pressure Meter Differential Air Pressure Gauge Dual Port

Regular Price $38.07 USD

WQM-241 pH / EC / Temperature Meter ATC 3 in 1 Waterproof Pen Type Water Quality Combo Multi-Parameter

Regular Price $20.90 USD

$REBS-28ATC 2-in-1 Brix Salinity Refractometer Dual Scale 0-32% Brix & 0-28% Salinity with ATC Sodium Chloride in Food Salt Seawater Brine$

REBS-28ATC 2-in-1 Brix Salinity Refractometer Dual Scale 0-32% Brix & 0-28% Salinity with ATC Sodium Chloride in Food Salt Seawater Brine

Regular Price $12.90 USD

560-10D Shore D Digital Hardness Meter Durometer 0~100HD Pocket Size Tester with LCD Display

Regular Price $19.90 USD

THE-32 Digital K / J / T / E / R / S / N Type Thermocouple Thermometer Dual-channel -150~1767°C (-238~3212°F)

Regular Price $14.90 USD

N03NF-388B Multipurpose Network LAN Cable Tester w/ 8 far-end test jacks

Regular Price $56.90 USD