Jiuhua Optical 101 Digital Refractometer, 0-50
£113.99 inc. VAT (£94.99 ex. VAT)
- Broad 0–50% Brix range with ±0.2% accuracy for precise coffee extraction and brewing.
- Built-in Automatic Temperature Compensation ensures accurate readings from hot brews without manual recalibration.
- Instant digital results in under 3 seconds using just two drops of liquid.
- IP65-rated water-resistant sample well allows quick, hassle-free rinsing straight under the tap.
Why Choose CoffeeDens
Master Your Extraction
Stop relying on taste alone to dial in your morning espresso. The Jiuhua Optical 101 is a premium coffee refractometer designed to give you instant, actionable data on your brew's Total Dissolved Solids (TDS). By understanding exactly how much coffee has been extracted into your cup, you can easily diagnose sour, under-extracted shots or bitter, over-extracted brews, adjusting your grind size and yield for perfect consistency.
Professional Precision, Accessible Price
Historically, achieving laboratory-grade extraction metrics meant spending hundreds of pounds on legacy equipment. The Optical 101 disrupts the market by offering a high-precision digital optical interface at a fraction of the cost. With an accuracy of ±0.1%, it rivals industry standards, making it the ideal professional digital coffee refractometer for independent UK cafes and dedicated home brewing enthusiasts alike.
Versatile 0-50 Refractometer Range
Unlike standard coffee TDS meters that cap out at low percentages, the Optical 101 features a wide 0-50 Brix measurement range. This makes it incredibly versatile-not only can you measure delicate pour-overs and dense ristrettos, but you can also use it to check the sugar concentration of cafe syrups, alternative milks, and sweet beverages. Encased in an IP65 water-resistant shell, it easily withstands the spills and splashes of a busy barista workstation.
Technical Specifications
- TDS Measurement Range
- 0.00 - 25.00%
- Brix Measurement Range
- 0.00 - 50.00%
- Accuracy
- ±0.1% (TDS & Brix)
- Resolution
- 0.01%
- Measurement Time
- 2 seconds
- Sample Volume
- ≥ 0.2 ml
- Water Resistance
- IP65 (Sensor area)
- Battery
- 350mAh USB-C Rechargeable
- Certification
- CE, RoHS
- Warranty
- 2 Years UK
Price Comparison
See how our price compares across UK retailers
| Retailer | Price | Delivery | Warranty |
|---|---|---|---|
| CoffeeDens UK (Specialist)BEST | £113.99 | FREE | 12 months + UK Support |
| eBay (est.) | £142.49 | Varies | Seller dependent |
| High Street RRP | £182.38 | N/A | Varies |
Prices checked 3 August 2026. Prices may vary.
Customer Reviews
An absolute game-changer for my home espresso setup. I used to guess why my light roasts were sour, but with this coffee extraction meter, I can see exactly where my TDS is sitting. The USB-C charging is a great modern touch.
Ordered on Tuesday, arrived Wednesday morning. The build quality is fantastic. I run a small independent cafe and this professional digital coffee refractometer performs just as well as units that cost three times the price.
As a data nerd, I love this device. The ±0.1% accuracy is spot on when tested against my laboratory refractometer. It's transformed how I dial in my V60s every morning. Highly recommend for any serious coffee enthusiast.
Brilliant bit of kit for the price. The 0-50 range is great as I also use it for brewing kombucha. My only minor gripe is the screen can be a bit hard to read if the sun is glaring directly through the kitchen window.
I was hesitant to buy a digital coffee refractometer online, but CoffeeDens delivered perfectly. It's so much more accessible than the VST or DiFluid alternatives, yet gives me the exact same extraction data for my daily flat whites.
Very solid brew strength refractometer. It takes a second to get used to the cooling process for hot espresso samples, but once you have your workflow down, the consistency is unmatched. Great UK support too.
Incredible value for money. I bought this to help train my baristas on dialling in, and it's paid for itself in saved coffee beans alone. A must-have tool for any specialty coffee shop in the UK.