Porcelain dinnerware is a common household item for many. But the risks to consumers when dinnerware is not tested during inspection before use are lesser known. A porcelain bowl can crack and break if heated too quickly. A casserole dish can shatter in your dishwasher during cleaning. And your favorite porcelain coffee mug advertised as “microwave-safe” can blow up in your microwave.
On-site tests for porcelain dinnerware are essential for product inspection of these items. Not only does testing help by verifying supplier claims like “microwave-safe”, but it also reveals the true performance and safety of the product.
Whether you’re an importer looking after your brand and your customers or an end user looking out for your safety, you’ll want to be familiar with these important tests for porcelain dinnerware:
1. Thermal shock test for porcelain
The purpose of the thermal shock test is to determine the durability of the item after a sudden and rapid change in temperature. This ensures end consumers do not experience situations where an item cracks or shatters during normal use, which could be hazardous.
The procedure for thermal shock testing
To carry out the thermal shock test on porcelain dinnerware:
|Small-Medium||180° +/- 5||356° +/- 41|
|Large-XL||160° +/- 5||320° +/- 41|
2. Stain resistance test for porcelain
Staining is a common problem in porcelain ware. A quality ceramic glaze on the exterior of the porcelain helps prevent staining. The stain resistance test will verify the porcelain’s ability to maintain color and cleanliness after contact with various food substances. This test is important because porcelain dinnerware will frequently come in contact with food.
The procedure for testing stain resistance
Follow these steps for testing stain resistance:
3. Dishwasher resistance
Dishwasher resistance is one of the more practical tests for porcelain dinnerware that’s easy to perform. Sometimes the manufacturer of a particular item of porcelain dishware will add a claim to the product or packaging advertising that the item is “dishwasher-safe”. Using this very simple test you can assess any harmful effects caused by running the product through a dishwasher cycle.
The procedure for dishwasher resistance testing
To test porcelain for dishwasher resistance:
4. Water leakage check
Some porcelain items are made up of different components bound together during production. Material can leak through a dish if there are gaps between parts or glaze. The simplest test on this list, the water leakage check ensures that your items do not leak after storage over a period of time.
The procedure for water leakage check
5. Microwave adaptability test
Many manufacturers make claims about dishes being “microwave-safe”, attesting that the item won’t break or melt in a microwave, release toxins or experience electrical arcing. When it comes to tests for porcelain dinnerware your main concern should be checking for electrical arcing.
This test will assess the item’s ability to keep its form and temperature in a microwave. Any electrical arcing indicates there are metal lusters or glazing present in the item like gold, silver or copper, and the item should not be microwaved. If an item deemed “microwave-safe” fails this test, there may be an issue with its production process.
The procedure for the microwave adaptability test
Here’s how to carry out testing for microwave adaptability:
On-site tests for porcelain dinnerware are such a vital component of pre-shipment inspection. You’re likely to find porcelain or ceramic dishes in the average American or European kitchen cupboard. And any issues or hazards found in dishes after sale can lead to expensive returns or recalls and damage to a brand’s reputation.