Common Salt — Water Screen for Chalk
FSSAI's simple water test for whitening and insoluble sediment
FSSAI DART stirs salt in water. Chalk can make the water look white and insoluble matter can settle at the bottom.
What the FSSAI salt test does
FSSAI DART gives a simple water test for chalk in common salt. A spoonful of salt is stirred in water. Chalk can make the solution appear whitish, and insoluble impurities may settle at the bottom. Kitchen Check should focus on a clearly unusual whitening-and-sediment pattern rather than any tiny particle.
Read the salt label before judging particles
FSSAI's current myth-buster guidance explains that some salt products may contain permitted anti-caking substances and double-fortified salt can contain visible encapsulated iron particles. These should not automatically be called adulterants. The product type and label matter before interpreting the glass.
Do not overload the glass
A viral salt video can look suspicious simply because too much salt is added to too little water. FSSAI has specifically clarified that saturation can leave undissolved material and even foam-like appearances. Use a small amount and enough water for the rapid screen. Kitchen Check should avoid exaggerated quantities.
Do not call foam detergent
Foam or clumping in a highly concentrated salt mixture does not prove detergent adulteration. FSSAI's myth-buster specifically addresses this misinformation. Kitchen Check should never generate a detergent result from foam in salt water.
This check is narrow
The water test is only a quick chalk/insoluble-material screen. It does not verify iodine content, fortification level, microbiological safety or every chemical standard. A clear solution is not a universal purity certificate.
Use traceability for repeated concern
If several packs from one batch show the same unusual sediment, keep the packet, batch number and seller details. Do not add acid or other chemicals to the remaining salt. Official testing is the correct next layer.
Recommended result wording
Use 'No obvious chalk-like whitening/sediment', 'Visible particles may match permitted product features—check label', or 'Strong unusual whitening with sediment—screen suspicious'. Never show 'detergent confirmed'.
Do not confuse fortification particles with contamination
Some consumers see tiny coloured or insoluble particles in double-fortified salt and assume the product is contaminated. FSSAI has specifically clarified that permitted fortification and anti-caking components may be visible. Kitchen Check should ask the user to choose plain iodized salt or double-fortified salt before interpreting the glass. A product that matches its declared fortified form should not be failed simply because it looks different from ordinary white salt.
Keep the salt test away from nutrition claims
A chalk screen says nothing about whether the user should eat more or less salt. Kitchen Check should not connect an adulteration result to sodium targets, blood pressure or medical advice. Those belong to nutrition and healthcare guidance. This record only asks whether the salt-water behaviour shows an unusual chalk-like pattern.
The kitchen check
What you need
- Transparent glass
- Clean water
- Small salt sample
- Clean spoon
Related topics
Sources
- ReferenceDetect Adulteration with Rapid Test (DART) Book — Food Safety and Standards Authority of India, 2026
- ReferenceTesting Common Salt Adulteration with Chalk — FSSAI Video Library
- ReferenceFSSAI Myth Buster — Food Safety and Standards Authority of India, 2026
- ReferenceFood Safety Connect — Consumer Grievance and Testing Routes — Food Safety and Standards Authority of India, 2026
