The Colitag System is a breakthrough in Coliform testing. The
test enables the simultaneous detection, identification and
confirmation of total coliforms and E.coli in 24 hours or less.
The examination of water for microbial pollution is a major health
undertaking. Drinking water supplies, swimming pools and spas
are all regularly monitored for the indicator organism Escherichia
coli ( E.coli) . Currently there are two accepted methods in use
– Multiple Tube fermentation ( MTF) and Membrane Filtration ( MF) .
Both are designed to enumerate the secondary indicator group,
total coliforms.
There are several drawbacks to these current methods of
bacteriological testing – in particular the time taken to generate
confirmed positive results, usually two to five days. Moreover, the
subjective nature of interpreting results, the lengthy and labour
intensive procedure involved and the susceptibility to interference
by non-coliform heterotrophic bacteria, all detract from these
methods.
ThE CoLiForm TESTing SySTEm
A simple, reliable technique is required which eliminates these
drawbacks and enables the rapid, confirmed enumeration of both
total coliforms and more importantly, E. coli.
Colitag is a pre-dispensed dry blended reagent formulation
containing salts, nitrogen and carbon sources and specific
indicator/ nutrients for total coliform and E. coli. Positive samples
are detected by a visible colour change.
Performing the Coliform test is simple. The reagent is supplied in
pre-measured dosage tubes for dispensing into sterile containers.
Simply fill a sterile tube to the level, mix and then incubate at 35 °
C. The formation of a yellow colour in 24 hours or less indicates
the presence of total coliforms. Positive tubes are then checked
for the presence of E.Coli by looking for fluorescence under UV
light.

Ordering information :
CT 220 PRESENCE/ ABSENCE PACK 100ML
Packs contain 20 mix and dispense unit doses of reagent for use
with 100ml sample
CT 200 PRESENCE/ ABSENCE PACK 100ML
Packs contain 100 mix and dispense unit doses of reagent for use
with 100ml sample
CT 109 INCUBAToR-MV
CT 102 PoRTABLE U/ V LAMP
CT 104 STERILE GRADUATED CoNTAINERS ( 10)
CT 105 STERILE GRADUATED CoNTAINERS ( 100)
PT 680 INCUBAToR THERMoMETER