quantify_mpn: Convert IDEXX QuantiTray results to MPN

Description Usage Arguments Value Author(s) References Examples

Description

This function converts counts of positive wells (large and small) into point estimete MPN (most probable number) values in units of MPN/100ml for IDEXX QuantiTray, QuantiTray/2000, and QuantiTray/Legiolert trays.

Usage

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quantify_mpn(large, small, method)

Arguments

large

Number of positve large wells (required for all methods).

small

Number of positve small wells (required for method qt-2000 and qt-legio).

method

Defines which QuantiTray method was used:

  • qt for QuantiTray method with 51 wells.

  • qt-2000 for QuantiTray/2000 method with 97 wells.

  • qt-legio for QuantiTray/Legiolert method with 96 wells.

Value

Numerical value: Point estimate of MPN/100ml in sample.

Author(s)

Jan Knappe, jan.knappe@gmail.com

References

https://www.idexx.com/en/water/resources/mpn-generator/

Examples

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quantify_mpn(large = 42, method = "qt")
quantify_mpn(large = 42, small = 42, method = "qt-2000")
quantify_mpn(large = 5, small = 42, method = "qt-legio")

jknappe/quantitray documentation built on May 20, 2019, 9:14 p.m.