TDS, or Total Dissolved Solids, indicates the percentage of a coffee beverage’s weight that comes from dissolved coffee material.
R2 Extract
specifically redesigned for coffee.

TDS, or Total Dissolved Solids, indicates the percentage of a coffee beverage’s weight that comes from dissolved coffee material.
Modern sensor technology
Old
CCDs have a tiny light-sensitive area, making the design delicate, since even slight misalignment can render it unusable.
New
CMOS sensors handle misalignment well. Their larger, distributed light-sensitive area reduces accuracy loss from minor shifts or handling while improving data collection.
Maintaining accuracy with microcalibrations

Each test uses a reference material to perform precise microcalibrations, adjusting for tiny variations and ensuring every reading is accurate.
The aluminum sample dish quickly spreads heat evenly across the sample, maintaining stable temperatures for more reliable measurements.
Accuracy vs. Precision
IP67 water resistance makes cleaning easy
We care.
At DiFluid, we take manufacturing attention to detail very seriously – checking every piece as it comes off the line to ensure maximum quality.
Introducing CoffeeOS

Plot your brew on one of the brew control charts to help understand your preferences and bring out the flavor profiles you desire.
What's in the Box?

Technical Specifications
R2 Extract measures the concentration of brewed coffee in TDS%.
TDS, or Total Dissolved Solids, refers to what percent of the water is coffee by weight.