Identity Specifications
Difco™ YM Agar
Dehydrated Appearance: Beige, free-flowing, homogeneous.
Solution: 4.1% solution, soluble in purified water upon
boiling. Solution is light to medium amber, very
slightly opalescent.
Prepared Appearance: Light to medium amber, slightly opalescent.
Reaction of 4.1%
Solution at 25°C: pH 6.2 ± 0.2
Difco™ YM Broth
Dehydrated Appearance: Light beige, free-flowing, homogeneous.
Solution: 2.1% solution, soluble in purified water. Solution
is light to medium amber, clear to very
slightly opalescent.
Prepared Appearance: Light to medium amber, clear to very slightly
opalescent. At pH adjusted to 3.0-4.0, medium
becomes slightly opalescent.
Reaction of 2.1%
Solution at 25°C: pH 6.2 ± 0.2