Feature: 1. Light weight and small size, wide range of applications, it can be used for all kinds of different liquid samples. 2. Use imported prism equipped with high‑definition eyepieces, to display clearly, easy and convenient to operate and use. 3. Non‑slip rubber sleeve, it is more stable to hold, comfortable, which allows you to better control the instrument. 4. High quality aluminum alloy and rubber material manufacturing ensuring maximum durability, built to last long. 5. The measurement range is wide, the accuracy is high, the measurement is convenient, and the liquid can be measured to a high standard. Specification: Item Type: Refractometer Material: Aluminum Alloy + Rubber Color: As shown in the picture Application: Reagent sampling Scope: Water: 0-100% Battery Fluid: 1.10-1.40 Accuracy: 5% 0.01. Package List: 1 x Refractometer1 x Pipette1 x Screwdriver1 x Wipe Cloth1 x Manual 1 x Plastic Box Note: 1. Be careful and cautious in use, use strictly in accordance with the instructions, do not arbitrarily loosen the connecting parts of the instrument, do not fall, collide, and strictly forbid vibration.2. After use, it is strictly forbidden to directly put it in water for cleaning, and wipe it with a clean soft cloth. For the optical surface, it should not be scratched.3. The instrument should be kept in a dry and non‑corrosive place.4. Avoid the loss of spare parts.