Chemical preparations for scientific purposes; diagnostic reagents for scientific purposes including testing environmental and clinical samples for the presence of microorganisms, particularly cryptosporidium and giardia; antibodies or fragments of antibodies for scientific purposes including testing environmental and clinical samples for the presence of microorganisms, particularly cryptosporidium and giardia; kits for detecting environmental and clinical samples for the presence of bioparticles including cells, and microorganisms such as bacteria and viruses; quality control samples for scientific and diagnostic purposes including samples of a selected number of microorganisms; chemical preparations for microbiology testing including clinical, environmental, research and industrial (including industrial preparations in the food, pharmaceutical and personal care industries) microbiology testing