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01 calibration buffer produced in accordance with ISO 3696/BS3978 standards using high purity salts
But more than that
The TS-2 thermostat stations is designed to replace a thermostat connected to a standard HVAC unit
As one of the three big nutrients for plants
the pH meter will always display pH 7
House and Garden 1-Component Soil Size:Quart 01 calibration buffer produced inHouse and Garden's one part base nutrient for soil amended with lime. Known for it's simplicity of use, this formulation is quickly becoming recognized as a leader in the market. 1 Component Soil contains the necessary minerals and nutrients needed for desirable results in both, vegetative and flowering stages. Formulated specifically for soil containing lime, 1 Component Soil does not contain calcium which must be added when switching to bloom. 1