No. 12Hormones & Additives
PPM™ (Plant Preservative Mixture) — 5 Litre Dose (10 ml)
A 10 ml dropper bottle dosed exactly for 5 litres of sterile medium (at 2 ml/L). Stops fungi and bacteria without an autoclave.
A 10 g dose (for 5 to 10 litres) of activated charcoal that neutralises phenolic oxidation and tissue browning.
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