Extech Battery Coolant/Glycol Refractometer — Model# RF40

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- Measures the freezing point of coolants
- Measures battery charge condition
- Provides accurate and repeatable measurements of % ethylene glycol and propylene glycol and °F on easy to read scale
- Propylene range: -60°F (63%) to 32°F (12°)
- Glycol range: -60°F (59°) to 25°F (16%)
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