Utilize a transfer pipette to handle this and follow the procedure below:
- Weigh the pipette and tare the weight.
- Fill the pipette with a liquid sample.
- Place the pipette on the balance and record the weight.
- Pipette out the liquid into the IDF Bag.
- Weigh the pipette and subtract that weight from the weight with a sample. This supplies us with the actual sample weight that went into the bag.