Phenol Red Lactose Differential Medium Size:500g ASTM-compliant Class A tolerance paired

ASTM-compliant Class A tolerance paired with a ground-glass stopper and high-contrast white graduations supports precision dilution where regulatory traceability matters

slotted masses (50g and 100g)

reading pressure changes as the bulb is submerged in various-temperature baths

Four-color label combines chemical name

with a stainless steel tray beneath for washable classroom biology workflows

Phenol Red Lactose Differential Medium Size:500g ASTM-compliant Class A tolerance pairedPhenol red indicator shifts yellow when bacteria ferment lactose to acid, supporting differential identification of coliform and lactose fermenting species.