powder, suitable for microbiology

Agar-agar, Gum agar
Linear Formula:
CAS Number:
EC Number:
MDL number:

Quality Level






microbiology: suitable (preparation)

ign. residue



≤20% loss on drying


5-8 (50 °C, 1.5% in H2O, 100 °C/15 min.)

transition temp

gel point ~35 °C (1.5% solution)

gel strength

>300 g/cm2 (1.5% gel)


H2O: 1.5% at 70 °C, clear to slightly hazy (100 °C/15 min.)

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General description

Agar is a complex gelatinous carbohydrate, and is added to the LB broth (Lysogeny broth, Luria broth, Lennox broth, or Luria-Bertani medium), in order to form gel for bacteria to grow upon. LB Broth is the most widely used nutritionally rich medium, for the culture and growth of bacteria. There are several different formulations of Lb broth, but the composition is generally the same comprising of peptides and casein peptones, trace elements, mineral and vitamins.
Agar has been used as reagent for the following studies:
  • Plant cell culture studies.
  • As medium supplement for the growth of wild-type Arabidopsis thaliana (ecotype Columbia) and transgenic seeds.
  • For the solidification of culture medium of cork oak somatic embryos.
  • It may be used for incubation of single antibody-forming cell to investigate the plaque formation.
  • Agar suspension culture may be used for the analysis of cell transformation of palyoma virus.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Certificate of Analysis
Certificate of Origin
Tatiana Johnston et al.
Scientific reports, 8(1), 7062-7062 (2018-05-08)
The emergence of Staphylococcus aureus strains resistant to 'last resort' antibiotics compels the development of new antimicrobials against this important human pathogen. We found that propyl 5-hydroxy-3-methyl-1-phenyl-1H-pyrazole-4-carbodithioate (HMPC) shows bacteriostatic activity against S. aureus (MIC = 4 μg/ml) and rescues Caenorhabditis elegans from...
Jacinta E Browne et al.
Ultrasound in medicine & biology, 43(11), 2733-2740 (2017-08-28)
A device for the training and quantitative assessment of the competency of trainee radiologists in the technically challenging area of breast sonography was developed and evaluated. Currently, suitable commercially available devices are lacking, and there is a growing realization that...
Christos G Xanthis et al.
Magnetic resonance imaging, 48, 96-106 (2017-12-31)
Quantitative cardiovascular Magnetic Resonance Imaging techniques are gaining wide acceptance within the MR community due to their potential to diagnose non-localized disease, guide therapy and improve patient outcome. During the last decade, there has been an increasing interest for developing...
Developmentally and stress-induced small heat shock proteins in cork oak somatic embryos.
Puigderrajols P1, Jofre A, Mir G, Pla M, Verdaguer D, Huguet G, Molinas M
Journal of Experimental Botany, 53 (373), 1445-1452 (2002)
Hijacking membrane transporters for arsenic phytoextraction.
Melissa S LeBlanc et. Al.
Journal of Biotechnology, 163 (1), 1-9 (2013)

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