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Protective orange rubber boot for Hanna Ion specific meters. This item is a special order item only.

 
Protective orange rubber boot for Hanna Ion specific meters. This item is a special order item only.

Replacement electrode for hand held combe meter part # DI-HI98129.

 
Replacement electrode for hand held combe meter part # DI-HI98129.

Replacement ORP probes for Aquazone Ozone generators. This item is a special order item only.

 
Replacement ORP probes for Aquazone Ozone generators. This item is a special order item only.

Salinity (NaCI) Calibration solution 30g-l. (Hanna).

 
Salinity (NaCI) Calibration solution 30g-l. (Hanna).

Salinity Refractometer

 
SALE

Salt tester for Koi Ponds

 

Spare cuvets for Hanna Colorimeter. FOUR QUANTITY PER PACK.

 
Spare cuvets for Hanna Colorimeter. FOUR QUANTITY PER PACK.

T.D.S. Calibration Solution 84 ppm 20 ml. sachet Hanna.

 
T.D.S. Calibration Solution 84 ppm 20 ml. sachet Hanna.

Tissues for Cuvets (4 pc.). This item is a special order item only.

 
Tissues for Cuvets (4 pc.). This item is a special order item only.

Waterproof Total Dissolved Solids Pen