Draper Expert Anti-Freeze, Battery and Screenwash Refractometer Kit

Take the guesswork out of fluid testing with the Draper Expert Anti-Freeze, Battery and Screenwash Refractometer Kit (RFR). This precision optical instrument delivers fast, accurate readings across three critical vehicle fluids, helping mechanics and motorists ensure vehicles are properly protected all year round – particularly during the harsh winter months.

Three Tests. One Precision Instrument.

The RFR refractometer is a true multi-purpose testing tool, capable of measuring:

• Anti-freeze strength – protecting engines from freezing and corrosion
• Battery fluid gravity – assessing the condition and charge state of conventional lead-acid batteries
• Screenwash concentration – ensuring your screen wash won't freeze in cold temperatures

Rather than carrying multiple gauges or relying on imprecise float-type testers, the RFR gives you a single, reliable instrument for all three essential fluid checks.

Compatible with Modern Anti-Freeze Technology

Many older testers struggle with the newer generation of coolant formulations. The Draper Expert RFR is specifically designed to work with modern anti-freeze types including G11, G12, and G13 – covering the vast majority of current European and Asian vehicles on the road today. Whether you're servicing a classic car or the latest model, the RFR has you covered.

Precise Measuring Ranges

These wide measuring ranges ensure the RFR is suitable for vehicles operating in even the most extreme cold weather conditions.

Automatic Temperature Compensation (ATC) for Reliable Results

Fluid readings can vary significantly with temperature – a major source of error with basic refractometers. The RFR's built-in Automatic Temperature Compensation (ATC) technology continuously adjusts readings to account for ambient temperature fluctuations, ensuring you always get accurate and dependable results regardless of workshop or outdoor conditions.

Fully Equipped and Ready to Use

The RFR kit is supplied complete with everything needed for accurate testing right from the start:

• Calibration screwdriver – for fine-tuning accuracy
• Calibration fluid – ensuring your readings are always correctly referenced
• Pipette – for clean, controlled fluid sampling
• Cleaning cloth – for maintaining the optical prism between tests
• Storage case – keeping all components protected and together

Key Features

• Precision refractometer for accurate fluid concentration testing
• Three-in-one testing – anti-freeze, battery fluid, and screenwash
• Compatible with G11, G12 and G13 anti-freeze formulations
• Automatic Temperature Compensation (ATC) for reliable results in all conditions
• Anti-freeze range: 0°C to -50°C
• Battery fluid gravity range: 1.10 – 1.40
• Screenwash range: 0°C to -40°C
• Supplied with calibration screwdriver, calibration fluid, pipette and cleaning cloth
• Packed in a protective storage case

Kit Contents

Why Choose the Draper Expert RFR?

Proper fluid maintenance is one of the simplest and most cost-effective ways to prevent vehicle breakdowns – especially heading into winter. Weak anti-freeze can lead to a cracked engine block; low battery fluid gravity signals a failing battery; inadequate screenwash concentration risks a frozen windscreen at the worst possible moment. The Draper Expert RFR gives you the professional-grade accuracy to catch these issues before they become expensive problems, in a compact, easy-to-use kit trusted by trade and DIY users alike.