Skunk Labs Ph Storage Solution 8oz (237ml) - For Ph Meter, Ph Probe Best Value Skunk Labs 8oz Ph Storage Solution Extends The Life Of Your Ph Probes Proper Storage Of Ph Meters Will Keep Reads Prompt & Quick To Stabilize Equivalent To BlueLabs Solution For A Fraction Of The Cost Skunk Labs 237ml For $11.95(Free First Class Shipping) vs BL 100ml For $12.95 Volume: 8oz (237ml) Skunk Labs Horticulture