• Freeze protection level indicated by the number of coloured balls which float.
• Easy-to-read temperature table on the body.
• Model No. AK4121• Convenient, pocket sized tester for modern propylene glycol antifreeze mixtures.
• Freeze protection level is indicated by the number of coloured balls which float in the sample.
• Easy-to-read temperature table on the body.Propylene Glycol Antifreeze Pocket Tester
- Ball Type