- The product 300w ProStar CFL - Dual Spectrum (6400k/2100k ideal for vegetative & flowering growth) has been added to comparison list.

Essentials CF Standard 2.8ms 250ml

Availability: Sold out, more on order!

£2.99

| Add to Compare

Quick Overview

Essentials CF Standard 2.8ms 250ml

Calibration Fluid for EC/CF meters.

Essentials pH buffers are a known solution of a certain pH value designed to test the accuracy of pH meters used to measure the pH of a nutrient solution. Use to Calibrate your EC/CF meter every week to ensure maximum accuracy. Features CRC Cap for Safety.

Essentials CF Standard 2.8ms 250ml