| abstract |
The present invention provides a method for simply and accurately measuring the number of microorganisms in a sample containing carbonate ion or bicarbonate ion such as dialysate. A composition for preparing a culture medium for counting of microorganisms, which comprises (a) polyacrylic acid and / or a salt thereof, (b) a hydroxide of an alkaline earth metal, and (c) a nutrient component. A method of measuring the number of microorganisms, comprising the steps of adding and mixing a sample, culturing the microorganism contained in the sample, and measuring the number of colonies of the microorganism. 【Selection chart】 None |