Depending on your order up to two samples may be supplied for each distribution:
  • Suspension A is a suspension of Cryptosporidium and/or Giardia in phosphate buffered saline (PBS). Approximately 1 ml is supplied. Samples may be prepared either from commercially available concentrates or formalin fixed faecal material. Participants are required to count the oocysts and cysts by fluorescence microscopy and/or any other technique that they routinely use.
  • Suspension B is a PBS Cryptosporidium oocyst and/or Giardia suspension. Approximately 1 ml is supplied. This suspension is added to 10 litres of tap water by the participants and then processed by the laboratory's routine analytical method.
Closing date for registrations is two weeks before the start date of these tests