Recovery of Cryptosporidium oocysts from small and large volume water samples using a compressed foam filter system.
A novel filter system comprising open cell reticulated foam rings compressed between retaining plates and fitted into a filtration housing was evaluated for the recovery of oocysts of Cryptosporidium from water. Mean recoveries of 90.2% from seeded small and large volume (100-2000 l) tap water samples, and 88.8% from 10-20 l river water samples, were achieved. Following a simple potassium citrate flotation concentrate clean-up procedure, mean recoveries were 56.7% for the tap water samples and 60.9% for river water samples. This represents a marked improvement in capture and recovery of Cryptosporidium oocysts from water compared with conventional polypropylene wound cartridge filters and membrane filters.
Sartory
D P
DP
Severn Trent Water, Quality & Environmental Services, Shrewsbury, UK. david.sartory@severntrent.co.uk
Parton
A
A
Parton
A C
AC
Roberts
J
J
Bergmann
K
K
D000818:Animals; D003458:Cryptosporidium / Q000302:isolation & purification*; D005374:Filtration; D005618:Fresh Water / Q000469:parasitology; D014867:Water / Q000469:parasitology*; D014881:Water Supply
D014867:Water