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QUANTUM PAR METERFully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700 nm. It measures up to 10,000 ?mol compared with 2,000 ?mol for other meters on the market.• Data logging capability using standard mini-USB cable and proprietary data logging software available at hydrofarm.com• Low power consumption with built-in low battery power indication• Constant linear response curve (as opposed to other meters’ Gaussian response) yields higher accuracy independent of wavelength—perfect for measuring LED light output• Automatic sun or electric light calibration modes ensure accurate readings no matter the source
The CO2 Test Kit includes: 1 - 100cc syringe, 2 - test tubes and instructions. Product 702300 has a range: 300 - 5000 ppm, Sample Volume: 100 ml, Sample Time: 2 min., Color: White to Purple. Box contains 10 tests.
Replacement tubes for the CO2 Test Kit. sold as eachReads CO2 level in parts per million
LR44 Digital Pen batteries- sold individually For Use In:
- Hanna Waterproof pH Meter
- Hanna Waterproof Dual Handheld Meter
- Oakton TDS meter
- Oakton pH meter