For this ORP TESTER， it does not includes calibration liquid，the one you get maybe not accurate，In order to ensure the accuracy of this item pls make calibration when you get the parcel

Use to measure the amount of Oxidation Reduction Potential (ORP) level.

The tendency of the solution to either gain or lose electrons.

Clear LCD with backlight.

Apply in water sources， aquarium， hydroponics， spas， swimming pools and other water systems.

Mini small size， easy to carry with.

Compact and portable pen-type design.

Easy to use and provides instant display of results.

Range: -1999mV ~ 1999mV

Operating Temperature: 0°C ~ 50°C(32°F ~ 122°F)

Battery: 2 × 3V(CR1632) Button Cell Battery (not included)

Item Size: 14.8 * 2.6 * 1.4cm / 5.8 * 1.0 * 0.6in

Item Weight: 37.4g / 1.3oz

Package Size: 17.8 * 7 * 3cm / 7 * 2.8 * 1.2in

Package Weight: 94g / 3.3oz

Shipment:

When you place an order，we will send the items within 3 days once your payment is completed.

We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries， which may affect how quickly your product is inspected.

Please note that buyers are responsible for all additional customs fees， brokerage， fees， duties， and taxes for importation into your country. These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments.

Warranty & Maintenance:

We offer the 15 days free replacement. Buyers may request for a replacement within 7 days from your receipt of the product. The buyer should return the product in the original conditions to us and should bear the shipping costs for return.

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