Most Probable Number calculator to estimate microbialcount in food and water. Can be user customized fornumber of dilutions, quantity of sample, number oftubes, and number of significant figures displayed.
ProKon - is an amazing engineering calculator with multiple conversion and calculation modules.
The Relief Data is a tool created by the Philippine's Bureau of Internal Revenue
This is an IP Subnet Calculator for IPv4/v6 which calculates the subnets.
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