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VST Syringe Filters for Espresso / Coffee

Rp 50.000

Used to quickly remove suspended solids and CO2 gas from ESPRESSO beverages for accurate, repeatable refractometer measurements.

Fine non-dissolved sediments in unfiltered espresso reflects rather than refracts light and can cause inaccurate or erratic measurements. CO2 gas infused into solution with fresh roasted and ground espresso coffee reduces refractive index causing inaccurate measurements. VST developed these multi-media syringe filters specifically for clarifying and degassing espresso prior to refractometer measurements to maintain VST’s ±0.01% typical precision specification and are strongly recommended for  espresso measurements.

VST COF/ESP Syringe Filters are also suitable for use with coffee ground for filter brewing using perforated metal or woven mesh filters.

Especially useful for trouble-shooting, testing and matching performance of single, double & triple espresso filters in espresso equipment during set up.

43 in stock

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Syringe Filter Safety and Operating Instructions

VST Syringe Filters for Espresso / Coffee

GENERAL NOTES AND RECOMMENDATIONS

Espresso includes both dissolved and undissolved (or suspended) brew solids. Refractometers measure Total Dissolved Solids. Syringe filters are used to remove suspended solids that can interfere with refractive index readings. Before taking a TDS measurement, suspended solids must be removed from the espresso, the clarified sample allowed to cool and time permitted for CO2 to diffuse out of solution, according to the procedures, below. Following these procedures will ensure accurate, repeatable results.

Note : When comparing % TDS measurements made with a refractometer to those taken by a dehydration method, the espresso beverage sample to be dehydrated must also be filtered first, using a method similar to that recommended, below.

Change filters when flow becomes slow or resistance becomes excessive. Generally, one filter is required for each measurement. Do not force more liquid through a filter that has reached its maximum capacity, or bursting of the device may occur resulting in loss of sample or personal injury.

Note the glass or cup should be at ROOM TEMPERATURE to cool the clarified espresso sample.

SAMPLING PROCEDURE

Allow 1 minute for espresso to cool and CO2 to diffuse out of solution. Stir the sample.

Place the syringe tip under the crema, above the bottom and draw 3-4 mL of espresso.

Attach a syringe filter approx a quarter-turn until snug. Do not over tighten.

Slowly express about 2-mL into clean, dry glass.

Allow 30-seconds to cool.

MEASUREMENT PROCEDURE

Draw a 0.2 - 0.4 mL sample.

Transfer to Sample Well.

Allow 30-seconds to equibrilate.

Measurement in % TDS. (12.1 %)

Measurement in nD and Temp. (1.3546 nD at 21.6ºC)

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VST Syringe Filters for Espresso / Coffee

Rp 50.000

43 in stock