E&O Laboratories Ltd have successfully grown their Culture Media business over the last 30 years to become a leading manufacturer
servicing Microbiology Laboratories , Location in Scotland. Their comprehensive media range is continually expanding into specialised industry sectors as well as aiding the rapid diagnosis of the newest antibiotic resistant bacteria strains.
INDUSTRY SECTORS:
• Clinical, Veterinary & Aquaculture
• Food, Water & Environmental
• Pharmaceutical, Industrial & Cosmetics
• Academia & Research
PRODUCT CATEGORIES:
• Ready-to-use Culture Media – Bottled, Bagged and Plated
• Dehydrated Culture Media & Raw Materials
• Antibiotic Supplements & Reagents
• Fresh Donor Horse & Sheep Blood – Frozen Sterile Filtered Serum

Dehydrated Culture Media products are formulated to supply the required nutrients to allow for the growth of microorganisms. Used in combination with a variety of selective agents and incubation conditions a wide range of specific organisms can be isolated. With careful raw material selection of the various media components E&O can ensure a consistent level of quality and performance. For each formulation the necessary ingredients are accurately weighed, combined and blended together to produce a homogenous powdered product.
This media is prepared in accordance with the microbial limit testing by harmonized methodology of USP/EP/BP/JP/IP. It is recommended for sterility checking of non-sterile products, nutritional and dietary supplements. It can be used to initiate growth from small inocula and to obtain the highest viable count of clostridia. Barnes and Ingram used the broth medium for diluting an inoculum of vegetative cells of Clostridium perfringens. It can be used in studies of spore forming anaerobes. Composition complies with specifications in Chapter 62 Microbiological Examination of Nonsterile Products: Tests for Specified microorganism.
Campylobacter Cefex Agar Base is recommended for isolation and cultivation of Campylobacter species. It is a highly nutritious base and the addition of horse blood supplements the medium with X-factor and other growth factor requirements.Incorporation of antibiotics, Cefaperazone and cycloheximide inhibits gram positiv eand gram negative organisms and fungi.Typical Campylobacter jejuni appear as small mucoid, grayish flat colonies with irregular edges.
Karmali Campylobacter Agar Base is used for selective isolation and cultivation of thermotolerant Campylobacter species from food and animal feeds as per APHA.This medium is recommended by the ISO Committee and APHA for the selective isolation and cultivation of Campylobacter species and is a modification of the original formulation of Karmali et al.
Modified Rappaport Vassiliadis Medium is recommended for selective enrichment of Salmonellae from food and environmental specimens. This medium is a selective enrichment medium for isolation of Salmonella from foodstuffs, environmental and clinical specimens. The test specimen is to be first added to Buffered Peptone Water for pre-enrichment followed by inoculation into Modified Rappaport Vassiliadis Medium and and further subculturing on Brilliant Green Agar.
RPF Agar Base is recommended for the enumeration of coagulase positive Staphylococci from food and animal feeding stuffs. The composition and performance criteria are in accordance with ISO 6888-2:1999 & / Amd 1:2003. This medium works on same principle as Baird Parker Agar with addition of Fibrinogen Plasma together with Trypsin and Potassium Tellurite as single supplement. The medium is used for isolation and enumeration of Staphylococci in food and other material since it allows a good differentiation of coagulase positive strains.Staphylococci appera as white to grey-black coloured colony surrounded by an opaque zone.
This medium was developed by Lowburry and is a modification of Tech Agar (Medium A) with addition of cetrimide for selective isolation of P. Aeruginosa. These media are used for the examination of cosmetics and clinical specimens for the presence of Ps.aeruginosa, as well as for evaluating the efficacy of disinfectants against this organism. Ps.aeruginosa colonies may appear pigmented blue, blue-green or non-pigmented. Colonies exhibiting fluorescence at 250nm and a blue green pigmentation are considered as presumptive positive.
Cetrimide Broth is recommended for selective cultivation of Pseudomonas aeruginosa. This medium is the modification of theformula designed by King, Ward and Raney and is useful for the cultivation of P. aeruginosa. This medium is selective as it contains cetrimide (Cetyl trimethyl ammonium bromide), which inhibits other bacteria except P.aeruginosa. is used for the examination of cosmetics and clinical specimens for the presence of P. aeruginosa, as well as for evaluating the efficacy of disinfectants against this organism.
Sporulation Broth is recommended for promoting sporulation in Bacillus subtilis. It is used for the detection of antibiotic residues in milk and milk products. The medium is specified for the preparation of spores, by APHA, for disc assay procedure for the detection of sulfa drugs and antibiotics in milk.
Lactose Gelatin Medium is recommended for detection of Clostridium species from food samples. The medium contains lactose which is fermented by the Clostridium species yielding acid and gas. Phenol red acts as the pH indicator which turns yellow at acidic pH. Clostridium perfringens shows positive lactose fermentation and gelatin liquefaction.
Iron Medium Base is recommended for presumptive confirmation of Clostridium perfringens from from food in accordance with FDA BAM, 1998.iOn isolation of black colonies from suspected foods on TSC agar, the culture is enriched in Fluid thioglycollate medium. The enriched culture is tested for stormy fermentation in this medium with added whole milk ,
CL Broth (Chopped Liver Broth) is recommended for the cultivation and enrichment of anaerobic bacteria from food It is in accordance with APHA and also recommended by FDA . HL Peptone B solids and peptone provide nitrogen and other nutrients necessary to support bacterial growth. Dipotassium phosphate provides buffering to the medium. Starch serves as a source of carbon.
Perfringens Agar Base, Granulated (Tryptose Sulphite Cycloserine Agar Base, Granulated) (T.S.C./S.F.P. Agar Base, Granulated) is recommended for the presumptive identification and enumeration of Clostridium perfringens with the addition of selective supplement and enrichment.This medium has been documented as one of the most useful media for the quantitative recovery of C.perfringens while suppressing growth of other facultative anaerobes, also recommended by APHA.
V Infusion Agar (Formerly known as Veal Infusion Agar) is recommended for the cultivation of fastidious pathogenic bacteria. The medium is used in preparation of stock cultures of Escherichia coli, in preparation of E. coli cultures to test their ability in invading mammalian cells and in microbial examination of egg and egg products.
CPC Agar Base w/ 1% cellobiose is used for cultivation and identification of Vibrio species from food in accordance with FDA BAM, 1998. It designed to differentiate Vibrio vulnificus from other Vibrios. Vibrio cholerae strains except V. cholerae 01-classical biotype grow on CPC Agar while most Vibrio parahaemolyticus strains do not grow on CPC Agar. Cellobiose is fermented by some Vibrio’s producing acid and is indicated by the pH indicator bromothymol blue, which turns yellow at acidic pH. Cresol red is the pH indicator of alkaline range, which turns red at alkaline pH. Alkaline pH of the medium enhances the recovery of Vibrio’s.
Casitose Yeast Extract Broth (CAYE) is recommended for cultivation of Vibrio cholerae cultures while testing their enterotoxigenicity. This medium is formulated as per APHA for cultivating Vibrio cholerae while testing their enterotoxigenicity as these media enhance the production of Vibrio enterotoxin. The medium contents like casein acid hydrolysate and yeast extract provide the essential nitrogenous nutrients and B-vitamins to the growing Vibrio’s.
Blood Free Campylobacter Selectivity Agar Base w/ Yeast Extract is recommended for selective isolation and differentiation of Campylobacter species, in accordance with FDA BAM, 1998. According to the BAM protocol, samples are pre enriched if required with suitable media under micro aerobic conditions for appropriate time at 37°C. These enriched cultures are further proceeded for isolation, identification and confirmation.
Campylobacter Enrichment Broth Base (Preston Enrichment Broth Base) is recommended for selective enrichment and cultivation of Campylobacter species. This medium is recommended by APHA for enrichment of thermotolerant Campylobacter species from foods. It has a rich basal medium to aid resuscitation of sublethally damaged Campylobacter. Preliminary incubation of the medium complete with antibiotics for 4 hours at 37°C was recommended to aid resuscitation of injured organisms followed by 42°C for 18-48 hours.
M-Endo Agar LES is recommended for enumeration of coliforms in water using a two step membrane filtration technique. It is used for testing coliforms in water using a two-step membrane filter procedure, wherein Lauryl Sulphate Broth (M080) is used as the primary enrichment medium. This medium is recommended by APHA for testing coliforms in drinking and in bottled water. Presumptive coliform bacteria will form red colonies with metallic sheen after an incubation at 35-37°C for 24 hours.
M-Endo Broth MF (MF Endo Medium) (M-Coliform Broth) is recommended for enumeration of coliform bacteria in water samples using one step membrane filtration technique by differentiating between lactose-fermenters and non-fermenters. This medium employed sodium sulphite and basic fuchsin instead of bile salts to achieve inhibition of gram-positive bacteria.
Motility Test Medium is recommended for detection of bacterial motility. Culture is stab inoculated through the centre of the medium and iIncubated at appropriate temperature. Non-motile organisms grow only along the line of inoculation whereas motile organisms grow away from the line of inoculation or may show growth even throughout the medium.
Malonate Broth is recommended for differentiation of Enterobacter and Escherichia on the basis of malonate utilization. Malonate utilizers change the colour of the medium to blue due to bromothymol blue, pH indicator in the medium. Enterobacter aerogenes, Klebsiella pneumoniae, Salmonella Arizonae are known malonate utilizers, the colour of medium changes to dark blue due to malonate utilization. Escherichia coli and Salmonella Typhimurium are malonate negative.
Mucate Broth is used for identification of enteropathogenic Escherichia coli and Salmonella species from milk and milk products as per APHA. This medium is formulated by Kauffman and Peterson and is recommended by APHA for identification of enteropathogenic Escherichia coli from milk and milk products. This medium can also be used as an aid in differentiation of Enterobacteriaceae especially within Salmonella genus.
Liquid medium for the selective enrichment of Salmonella in the examination of pharmaceutical products
according to the harmonized European Pharmacopoeia methods. This medium needs the addition of
potassium tetrathionate.
To achieve greater selectivity is added to the medium Novobiocin Selective Supplement (Art. No. 06-139LYO1).