Determination item

Test method

Equipment Name

Specification/Model

Place of origin

CaCo3 content

complexometric titration

electronic balance

FA1604S

Shanghai

Moisture

Loss on drying method

bench drying oven

WGT003

Chongqing

Basicity

GB/T19281-2003

electronic balance

strain formula

Shanghai

PH Value >

potential method

digital acidimeter

PHS-25A

Shanghai

Sinker

GB/T19281-2003

electronic balance

strain formula

Shanghai

Oil absorption

GB/T19281-2003

DOP

analytical pure

Fujian fuchen

Grain size

Omec particle size analyzer

LS-POP

Zhuhai, Guangdong

Sieve residue

GB/T19281-2003

standard screen

45 μ m

Shanghai xinxing SIEVE

Whiteness

Digital display whiteness meter

SBDY-1

Shanghai ruifeng

Fe, Mn

Spectrophotometry

spectrophotometer

721A

Sichuan

Loss on ignition

gravimetric method

Energy-saving electric furnace

SX2.5-10

Wuhan