1, put it in a horizontal place, and the roaming code should point to the red 0 tick mark.

2. Adjust the balance nuts (nuts at both ends of the balance) and adjust the zero point until the pointer is aligned with the central scale line. (The stroke code must be set to "0" and the balance nut should be adjusted in the opposite direction. Use the formula: the left end is high and the left end is adjusted. )

3. Place the weighed object on the left tray and the weight on the right tray. According to the characteristics of the weighed object, put it on glassware or clean paper, weigh the quality of glassware or paper at the same level in advance, and then weigh the weighed object.

4. Weight should not be held by hand, but should be clamped with tweezers. Do not wet or dirty the weight (this will rust the weight, increase the weight and make the measurement result inaccurate), and use tweezers to move the travel code.

5. Increase the weight from the estimated maximum value of the weighed object, and then gradually decrease. The pallet balance can only be calibrated to 0.1g. Increase and decrease the weight, and move the stroke code on the ruler until the pointer is aligned with the central ruler line again.

6. Too cold and too hot objects should not be weighed on the balance. Before weighing, it should be placed in a dryer to room temperature.

7. The mass of the object = the total mass of the weight+the scale value of the wandering code on the scale.

8, access to weights must use tweezers, remove the weights should be placed in the weight box, after weighing, the code should be moved back to zero.

9. When weighing dry solid drugs, put a piece of paper with the same quality on each of the two trays, and then weigh the drugs on the paper.

10, deliquescent drugs must be weighed with glassware (such as small beaker and watch mirror).

1 1. If the weight rusts, the measurement result will be small; If the weight is worn, the measurement result is too large.