Forgot your password?
New User?
Remember me
banner banner

You are here:Home » Culture Media » Media-Ingredients » Agar, Bacteriological

Agar, Bacteriological


  For pricing information, USA customers sign in.
  Outside USA? Please contact your distributor for pricing.


Bacteriological agar is a highly purified extract of select Gelidium marine algae, forming part of the cell wall, that gives excellent growth characteristics used in a wide variety of microbiological applications.
Catalog #A0930
Agar is a phycocolloid, a complex mixture of several sugar compounds that retains a gelatinous structure at RT after boiling. Bacteriological agar is purified by successive washings to remove or extensively reduce chemical contaminants, color and salts.
After autoclaving, agar is light amber and free of particulates, solidifying into a clear, firm gel. Agar is suitable for all molecular biology applications (i.e. bacterial and phage growth, M13 and Lambda). It is superior to standard microbiology grade agars.
CAS Number9002-18-0
AppearanceWhite to light tan, homogenous, free flowing powder.
SolubilityLight tan, clear, complete after autoclaving
pH (1.5%, post autoclaving)7.2 ± 1.5
Gel Strength (1.5%)600-1200g/cm2
Gel Point (1.5%)34-38°C
Heavy Metals
Total Heavy MetalsAs reported
Microbiological Analysis
SalmonellaNone Detected
E. coliNone Detected
Total Colony Count5000cfu/g
StaphylococcusNone Detected
Growth Performance
E. coliHB 101, DH 5, JM 103, HMS 174, FDA Seattle
(Bacterial Control/640nm, 24/48hrs)
YeastS. cerevisiae, K. lactis, S. pastorianus, P. pastoris, S. pombe
(Yeast Control/640nm, 72 hrs)
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

External Links