37. KNOP MEDIUM WITH FILTER PAPER

Ca(NO₃)₂ 1.0 g

KH₂PO₄ 0.25 g

MgSO₄ × 7 H₂O 0.25 g

FeCl₃ Traces

Agar 20.0 g

Distilled water 1000.0 ml

pH 6.5-7.0

Autoclave at 121°C for 15 min.

Sterilize filter paper strips by dry heat and soak with sterile medium.