Oxalic acid,sodium oxalate or ammonium iron (II) sulfate.
Standards
because primary standars are not as accurate
Primary standard can be defined in metrology, as a standard that is accurate enough that it is not calibrated by or subordinate to the other standards. Primary standards are used to calibrate other standards.
examples of primary memory are RAM, ROM, PROM, EPROM , etc.....
primary sorces
Speed.
Speed
Examples of primary fuels - wood, coal Examples of secondary fuels - charcoal, coke
primary= mc farms
The federal register
kaolin
The primary function of the Pharmacy and Theraputics Committee (PTC) is to establish standards for therapeutics.