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High Grade mixture of the elements of phosphorus and potassium
and dried/drying bud
Quickly and consistently measure moisture
So testing is the best practice
Essentials Lab Buffer 4 Solution Size:250ml High Grade mixture of theEssentials LAB Buffer 4 is an ideal solution for calibration of pH meters at pH4. Regular calibration will keep your pH meter reading accurately. Key points: Highly accurate pH4 solution Ensures that your pH meter is reading correctly Technical Specifications: Acidity level: pH4 Available in: 250ml, 1 Litre
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