Eisco Labs Hooke's Law Spring auspowers_batchone Reliably manage your pH levels

Reliably manage your pH levels with the General Hydroponics pH Test Indicator

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Eisco Labs Hooke's Law Spring auspowers_batchone Reliably manage your pH levelsEisco Labs Hooke's Law Spring The Hooke's Law spring set is used as a piece of the Visual Scientifics Hooke's Law kit (SKU PTHOKL). Product Features 3 spring set for use with Visual Scientifics Hooke's Law Apparatus Spring Cylinder Length (Between Loops): 1. 25in Spring Cylinder Diameter: 0. 38in