Bluelab Truncheon Nutrient Meter – EC, CF, PPM 500 & PPM 700 | No Calibration | Waterproof | Made in NZ filter replacement kit It is designed to be

It is designed to be used with water that is non-turbid or non-stagnant

accurate ppm readings with Automatic Temperature Compensation (ATC) and a built-in digital thermometer — all in a rugged

The HM Digital SAL-1700 Aquarium Salinity Meter is the essential tool for maintaining optimal salinity levels in saltwater aquariums

With easy 2 point manual calibration

Bluelab Truncheon Nutrient Meter – EC, CF, PPM 500 & PPM 700 | No Calibration | Waterproof | Made in NZ filter replacement kit It is designed to beBluelab Truncheon Nutrient Meter The Industry Standard EC, CF & PPM Meter The original and industry standard nutrient meter, trusted by growers worldwide for accurate and reliable readings. The Bluelab Truncheon Nutrient Meter (SKU: TRUNV2) makes nutrient monitoring effortless simply dip it in, and flashing LEDs provide precise readings automatically adjusted for temperature. No calibration. No buttons. No complexity. Just accurate EC, CF, PPM 500,