Key Laboratory Tests in Sanitaryware Plants

Aug 05, 2022

40 Laboratory Tests in Sanitaryware


To assure the quality of the finished product, the laboratory performs a number of tests during the manufacturing process of sanitary ware. And testing begins in the raw material discharge area and continues through dispatch. Since most problems can be identified early on and fixed without delay, these tests are crucial to maintaining a low rejection rate in production. See the list of tests performed in the sanitary ware lab below to assure quality.


  1. Clay test (Plastic materials)
  2. Moisture content in clay
    1. Alkali demand test
    2. Residue test
    3. Shrinkage test
    4. Loss of ignition test(LOI)
    5. Water absorption
    6. Casting rate
    7. MOR
    8. Iron test
  3. Quartz /Feldspar test (Non-plastic materials)
    1. Residue test
    2. Iron test
    3. Moisture test
    4. Cone test
  4. Glaze test
    1. Fired glaze color test
    2. Residue test
    3. Iron test
  5. Slip test
    1. Density/Specific Gravity
    2. Flow
    3. Thixotropy
    4. Residue test
    5. Shrinkage test
    6. Warpage
    7. MOR
    8. Permeability test
  6. Glaze test
    1. Density/Specific Gravity
    2. Viscosity
    3. Drying time
    4. Flow test
    5. Color matching
    6. Residue test
    7. PSD test
  7. Plaster of Paris test
    1. Residue test
    2. Initial and final setting time
    3. MOR
    4. Exothermic temperature measurement
    5. Absorption percentage
  8. Fired ware test
    1. Water absorption test
    2. Crazing test
    3. Thermal shock resistance
    4. Citric/ Chemical resistance test

Above test are common in Sanitaryware Industry laboratories. SOP is created for every Test to ensure the test are carried by proper procedure.

Did we cover all tests in Sanitary ware? leave your opinion in the comment section below.

Tangshan Taik runs a full function lab for ceramic sanitary MFG purpose make sure each process has the right material to use.