Product Description
Verify antifreeze strength and freeze protection with a digital readout instead of a hard-to-read scale. This refractometer reports both concentration and freezing point for ethylene glycol and propylene glycol coolants, giving fleet, HVAC and facility technicians the numbers they need to adjust mixtures before cold weather arrives.
This listing is for catalog number 48603: Digital Refractometer, MDX-603, Glycols/Coolant, 4 scales. Zero with distilled water, place coolant in the stainless steel prism well and read the LCD. The meter uses a 589.3 nm LED with automatic temperature compensation, and continuous mode records 15 consecutive readings. Its IP67 sensing unit tolerates shop conditions, and the grip and prism cover remove for cleaning. A hard case, pipette, AAA battery and manual are included. LIGHT LABS ships genuine Heathrow Scientific products with knowledgeable support from our Englewood, Colorado team.
Key Features
- Four glycol scales – Ethylene glycol % and freeze point, propylene glycol % and freeze point.
- Digital readout – Clear values with °C/°F switchable display.
- Automatic temperature compensation – Built-in ATC for reliable results.
- Shop-ready sealing – IP67 sensing unit, IP65 housing.
- Continuous loop mode – 15 successive readings.
Specifications
| Catalog Number | 48603 |
| Brand | Heathrow Scientific |
| Description | Digital Refractometer, MDX-603, Glycols/Coolant, 4 scales |
| Color | Black |
| Sold As | Each |
| Ethylene glycol range / accuracy | 0 to 65% v/v / ±0.5% |
| Ethylene glycol freeze point range | -50 to 0°C (-80 to 32°F) |
| Propylene glycol range / accuracy | 0 to 73% v/v / ±0.5% |
| Propylene glycol freeze point range | -50 to 0°C (-100 to 32°F) |
| Resolution | 0.1% / 0.1° |
| Display | Digital LCD with °C/°F switchable temperature |
| Light source | 589.3 nm LED |
| Sample well | Stainless steel prism well |
| Temperature compensation | Automatic (ATC) |
| Ingress protection | IP67 sensing unit, IP65 remainder |
Applications
- Vehicle antifreeze checks
- HVAC and chiller glycol loops
- Industrial process cooling
- Fleet maintenance
