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Batch No. 12: seven dyes tested, none detected

An advisory named Batch No. 10. We sent Batch No. 12 to an NABL-accredited laboratory for synthetic dye analysis. Here is the full result, including the compound the panel did not cover.

Published
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Batch
No. 12

An advisory was raised about synthetic colouring in our instant mix, naming Sunset Yellow FCF among others. It concerned Batch No. 10. The batch we sent for analysis is Batch No. 12, packed on 25 July 2026, after the advisory. Those are two different batches, and nothing below should be read as a statement about Batch No. 10.

What the laboratory tested

Seven synthetic dyes, each by HPLC, against a specification of “should be absent”.

Synthetic dye analysis, New Fast Tea Batch No. 12. Report OT/TEA/06-01/08/26.
AnalyteMethodResultLimitStatus
Sunset Yellow FCFThe compound the advisory named.HPLCNot detectedAbsentNot detected
Brilliant Blue FCFHPLCNot detectedAbsentNot detected
CarmoisineHPLCNot detectedAbsentNot detected
ErythrosineHPLCNot detectedAbsentNot detected
Fast Green FCFHPLCNot detectedAbsentNot detected
Indigotine (Indigo Carmine)HPLCNot detectedAbsentNot detected
Ponceau 4RHPLCNot detectedAbsentNot detected
TartrazineNot among the parameters in this report. ——Not tested

The laboratory's own conclusion, as printed: “Based on the above results, the New Fast Tea is safe for consumption.”

QSS Inspection and Testing Private LimitedOT/TEA/06-01/08/26Read the signed report

QSS is accredited by NABL under certificate no. TC-17494 to ISO/IEC 17025:2017, valid until 26 February 2027.

How this unfolded

  1. Date not stated

    An advisory is issued regarding Batch No. 10

    It raised concern about synthetic colouring agents, Sunset Yellow FCF among them, in the instant mix.

  2. Batch No. 12 is packed

    A later production batch. This is the batch that was sent for analysis.

  3. Samples submitted to two laboratories

    M/s INAAM Tea Agency met its legal advisor and Sadekar Enviro Engineers Pvt. Ltd. Testing Laboratory, and submitted a fresh sample of Batch No. 12. A sample was received by QSS Inspection and Testing Private Limited the same day.

  4. Seven dyes tested, none detected

    The results are above, with the signed report linked alongside them.

  5. A broader analysis is still running

    Commissioned through Sadekar Enviro Engineers Pvt. Ltd. Testing Laboratory, NABL certificate no. TC-12207. Expected 10 to 15 working days from 6 August 2026. This entry will carry the findings when they arrive, whatever they say.

    Result still outstanding.