1. Error?

2. Blank sample?

3. Part per thousand?

Solution

1. Error

can be define as deviation of experimental value with true value or expected value.

2. Blank sample

can be define as that part of analysis’s reagent that have no composition or little composition of an analyte, used for calibrating analytical instruments such as colorimeter.

3. Part per thousand

can be define as the value or figure of a analyze substance found in one thousands part of a particular substance.