• Smartphone displaying a coffee brewing app next to a coffee quality measurement device on a wooden surface.
  • Collection of coffee-making tools including a packaging box, R2 Extract, coffee scoop, storage pouch, charging cable, and cleaning cloth on a white background.
  • DiFluid R2 Extract on wooden table with espresso cup and coffee grounds
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Coffee Measurement Tool

[PRE-ORDER] DiFluid R2 Extract Coffee TDS Refractometer

[PRE-ORDER] DiFluid R2 Extract Coffee TDS Refractometer

Pre-order

Pre-order now - ships by 15/08/2026.
Your R2 Extract is reserved from our incoming DiFluid shipment. We will receive it, complete QC, and ship it by this date. If dispatch slips by more than 7 calendar days, you can cancel for a full refund or choose store credit as per our shipping policy.
Rs. 22,999.00
Rs. 22,999.00
Sale Sold out
Need help before buying? Ask us on WhatsApp
Pre-order confidence
  • QC checked by Fix Coffee before dispatch
  • Covered by Fix Coffee warranty and support
  • Full refund or store credit if dispatch slips by more than 7 days

Description

DiFluid R2 Extract is for brewers who want numbers behind the cup. It measures coffee TDS, so you can compare recipes, diagnose extraction, and repeat a brew that actually tastes right.

Use it after brewing: take a small sample, measure concentration, then connect the reading with dose, yield and brew notes in CoffeeOS. It is useful for filter coffee, espresso recipe work, roaster QC, cafe calibration and serious home brewing.

If you only need to weigh coffee, start with the Microbalance. If you already weigh your brews and want to understand extraction, R2 is the next tool.

Specifications

Product: Coffee TDS refractometer

TDS range: 0-30%

Best for: filter coffee, espresso recipe work, roaster QC and cafe calibration

Espresso use: supported; filter espresso samples for cleaner readings

Connectivity: Bluetooth connection to CoffeeOS

CoffeeOS tools: Brew Control Chart, brew logging and extraction calculation

Calibration: distilled water for comparability, or brew water for daily checks

Sensor design: larger CMOS sensor, no lid required

In the Box

  • 1 x DiFluid R2 Extract Coffee TDS Refractometer

Warranty

1-year warranty: This product is covered for 1 year from the date of purchase against manufacturing defects.

Warranty is handled by Fix Coffee. For any warranty concern, contact us on WhatsApp or email support@fixcoffee.in.

Read the full warranty policy.

Shipping & Returns

Pre-order: ships by 15/08/2026 after incoming shipment receipt and QC.

Your order reserves one unit from the incoming DiFluid shipment. If dispatch slips by more than 7 calendar days, you can cancel for a full refund or choose store credit as per our shipping policy.

Delivery estimates begin after dispatch. Damaged or defective units are handled through Fix Coffee support as per store policy.

Product declarations
Country of origin
China
Manufacturer address
Shenzhen Digitizing Fluid Technology Co., Ltd, 1602 Jinhua Building, Jinhua West Street, Longhua District, Shenzhen, Guangdong Province 518109, China.
Importer name and address
Nav Organic Foods Private Limited, A-304 Amrapali Awadh, Faizabad Road, Indira Nagar, Lucknow, Uttar Pradesh 226016, India

DiFluid R2 Extract is for brewers who want numbers behind the cup. It measures coffee TDS, so you can compare recipes, diagnose extraction, and repeat a brew that actually tastes right.

Use it after brewing: take a small sample, measure concentration, then connect the reading with dose, yield and brew notes in CoffeeOS. It is useful for filter coffee, espresso recipe work, roaster QC, cafe calibration and serious home brewing.

If you only need to weigh coffee, start with the Microbalance. If you already weigh your brews and want to understand extraction, R2 is the next tool.

Product: Coffee TDS refractometer

TDS range: 0-30%

Best for: filter coffee, espresso recipe work, roaster QC and cafe calibration

Espresso use: supported; filter espresso samples for cleaner readings

Connectivity: Bluetooth connection to CoffeeOS

CoffeeOS tools: Brew Control Chart, brew logging and extraction calculation

Calibration: distilled water for comparability, or brew water for daily checks

Sensor design: larger CMOS sensor, no lid required

  • 1 x DiFluid R2 Extract Coffee TDS Refractometer

1-year warranty: This product is covered for 1 year from the date of purchase against manufacturing defects.

Warranty is handled by Fix Coffee. For any warranty concern, contact us on WhatsApp or email support@fixcoffee.in.

Read the full warranty policy.

Pre-order: ships by 15/08/2026 after incoming shipment receipt and QC.

Your order reserves one unit from the incoming DiFluid shipment. If dispatch slips by more than 7 calendar days, you can cancel for a full refund or choose store credit as per our shipping policy.

Delivery estimates begin after dispatch. Damaged or defective units are handled through Fix Coffee support as per store policy.

Country of origin
China
Manufacturer address
Shenzhen Digitizing Fluid Technology Co., Ltd, 1602 Jinhua Building, Jinhua West Street, Longhua District, Shenzhen, Guangdong Province 518109, China.
Importer name and address
Nav Organic Foods Private Limited, A-304 Amrapali Awadh, Faizabad Road, Indira Nagar, Lucknow, Uttar Pradesh 226016, India
View full details
Measure Coffee TDS
Measure dissolved solids so recipe changes are based on extraction data, not guesswork.
CoffeeOS Sync
Connect readings with brew ratio, notes and Brew Control Chart workflows.
Espresso Capable
0-30% TDS range covers filter coffee and espresso; filter espresso samples for the cleanest readings.
Simple Calibration
Calibrate with distilled water for comparability or brew water for daily checks.

R2 Extract workflow

Measure concentration. Calculate extraction. Repeat the cup.

R2 Extract is for the moment after brewing: take a sample, measure TDS, then use CoffeeOS to connect that result to your recipe and extraction target.

1

Brew with a target

Weigh dose and yield, then keep the brew recipe fixed enough to compare results.

2

Measure TDS

Check dissolved solids with R2. For espresso, filter the sample first for the cleanest reading.

3

Log in CoffeeOS

Sync the reading into CoffeeOS and see the result on the Brew Control Chart.

4

Adjust one variable

Change grind, ratio or time based on extraction data instead of guessing from taste alone.

Key details

What R2 Extract adds to your brew bar

0-30% TDS rangeCovers filter coffee and espresso concentration checks.
CoffeeOS syncConnect readings with brew ratio and Brew Control Chart workflows.
Calibration choiceDistilled water for comparability, brew water for daily extraction checks.
Bluetooth connectionSend R2 readings directly to CoffeeOS.
CMOS sensorDesigned to reduce external-light impact and work without a lid.
Espresso samplesFilter the sample first for the cleanest reading.

Choose your DiFluid workflow

Microbalance controls dose, time, yield and flow rate. R2 Extract checks TDS and extraction after brewing.

Pre-order
R2 Extract

R2 Extract

Coffee TDS and extraction data.

Rs. 22,999.00

View product
Measures
MeasuresCoffee TDSUse concentration data to calculate extraction
Capacity / Range
TDS range0-30%Covers filter coffee and espresso samples
Workflow
WorkflowCoffeeOS + Brew Control ChartLogs readings and calculates extraction
Setup & Calibration
CalibrationDistilled or brew waterChoose comparability or daily recipe accuracy
Best For
Best forRecipe diagnosisCafes, roasters and serious home brewers
Pairs With
Pairs withMicrobalanceWeigh dose and yield, then measure TDS
Pre-order
Microbalance

Microbalance

Dose, time, yield and flow rate.

Rs. 10,999.00

View product
Measures
MeasuresWeight + time + flow rateTrack the core brew variables
Capacity / Range
Capacity2000g maxBuilt for pour-over, AeroPress and espresso output
Workflow
WorkflowCoffeeOS toolsBrew Ratio Calculator, Recorder and Controller
Setup & Calibration
Special featuresAuto timing + vibration filtrationMore repeatable daily brewing
Best For
Best forRecipe executionHome brewers and cafes dialing by ratio and pour speed
Pairs With
Pairs withR2 ExtractWeigh the brew, then verify concentration

Frequently asked

What does DiFluid R2 Extract measure?

It measures coffee TDS, or total dissolved solids. This tells you brew concentration and helps you calculate extraction when paired with brew mass and recipe data.

Can I use R2 Extract for espresso?

Yes. The 0-30% TDS range covers espresso. For cleaner espresso readings, filter the sample first so oils and suspended particles do not distort the result.

What water should I use to calibrate it?

Use distilled water when you want absolute comparability across devices and users. Use your brew water when you want daily extraction checks that reflect your actual recipe water.

Does it work with CoffeeOS?

Yes. R2 connects to CoffeeOS over Bluetooth so TDS readings can be logged with brew ratio and Brew Control Chart data.