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Filter Basket

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Filter Basket

Filter Holder

Filter Holder

Feature Products

Why Chengtech?

Chengtech Espresso Components boasts over 19 years of expertise in producing coffee machine components, guaranteeing superior and more consistent quality. Among their innovations:

  • Pioneered the manufacturing process of the filter cup holes.
  • Hole tolerance is assured to be less than 0.02mm.
  • Achieved the highest precision in hole manufacturing.

Total Dissolved Solids (TDS)

One way to use TDS is to define various coffee drinks. An espresso is classified as such when its TDS falls between 8-12%. Using the new 0.02mm hole tolerance technology, Chengtech's filter basket ensures that the TDS produced consistently exceeds 9%.

From TDS to Extraction Rate

Calculate the Extraction Rate using TDS and Brew Formula: The formula to convert TDS to extraction rate is:

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Extraction Rate (%) = (TDS (%) × Brewed Coffee Volume (ml) / Coffee Grounds Weight (g)) × 100

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So, if you have a TDS of 9.58%, used 20g of coffee grounds, and brewed 300ml of coffee, the extraction rate would be:

Extraction Rate = (9.58 × 41.8 / 20) × 100 = 20%

This means that 20% of the available coffee compounds in the grounds were extracted into the water.

Customer Reviews

  • "

    Great service and very fast shipping, highly recommended.

    -- John D.

  • "

    Everything was perfect, nice package! Very fast shipping, thank you!

    -- Mary B.

  • "

    You saved my espresso machine! Now it makes amazing shots, thank you!

    -- Tom A.