The green LED is numbered from 1-10 and will light up as the probes are dipped into solutions if salts or acids.
Visually compare conductivity between different solutions.
Eath linght represents a unique level of conductivity form very low to very high(10), with brass probes.
Product Weight:0.1kg
Overall Size:150x40x15mm

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Conductivity Meter

SKU: SL-600