40 Important Laboratory Tests in Sanitaryware Manufacturing

Laboratory Tests in Sanitary Ware Production

Various tests are being carried out by the laboratory in a sanitary ware production process to ensure the quality of the final product. Testing starts from the raw material discharge area up to dispatch. These tests are very important to keep the rejection rate low in production, as most problems can be found at the initial stage and eliminated immediately. Below is a comprehensive list of tests performed in the sanitary ware lab to ensure product quality.

Raw Material & Component Tests

Clay Test (Plastic Materials)

• Moisture content in clay
• Alkali demand test
• Residue test
• Shrinkage test
• Loss of ignition test (LOI)
• Water absorption
• Casting rate
• MOR
• Iron test

Quartz / Feldspar Test (Non-plastic Materials)

• Residue test
• Iron test
• Moisture test
• Cone test

Plaster of Paris Test

• Residue test
• Initial and final setting time
• MOR
• Exothermic temperature measurement
• Absorption percentage

Slip & Glaze Tests

Slip Test

• Density / Specific Gravity
• Flow
• Thixotropy
• Residue test
• Shrinkage test
• Warpage
• MOR
• Permeability test

Glaze Test

• Fired glaze color test
• Density / Specific Gravity
• Viscosity
• Drying time
• Flow test
• Color matching
• Residue test
• PSD test
• Iron test

Fired Ware Tests

Fired Ware Quality Control

• Water absorption test
• Crazing test
• Thermal shock resistance
• Citric / Chemical resistance test

Quality Assurance Standards

The aforementioned tests are standard tests in laboratories within the sanitaryware industry. An SOP (Standard Operating Procedure) is created for every test to ensure tests are carried out by proper procedure.

Learn more about sanitaryware defects.