What factors influence the price of a transformer oil testing kit?

Price is driven by measurement scope and accuracy. Simple field kits for moisture screening or basic BDV testing cost less than multi parameter kits that include Karl Fischer moisture, tan delta, resistivity, temperature compensation, data logging, and calibration certificates. Standards compliance, ruggedness, electrode design for BDV, sample handling accessories, and software also affect cost. Supplier support, spare parts, and the need for periodic calibration or consumables can significantly influence total ownership cost.