1Dumont microscope tweezersPreparation before use
Clean the work area
Ensure that the workbench is clean and dust-free to avoid contaminating the tweezers or samples.
Choose the appropriate model
Sharp tipped tweezers: suitable for grasping cells, particles, or small tissues.
Round headed tweezers: suitable for larger or more fragile samples such as blood vessels and nerves.
Special purpose tweezers: such as anti capillary tweezers and self-locking tweezers, should be selected according to experimental needs.
wear gloves
After entering the laboratory, wear gloves first and then take out tweezers to prevent hand grease or stains from contaminating the tweezers.
2、 Correct grip method
Grip pen posture
Place the handle of the tweezers between the thumb and middle finger, and gently support the tip of the tweezers with the index finger.
Maintain wrist stability and avoid excessive force that may cause hand fatigue.
Support and Control
Support the back of the tweezers with the middle finger to ensure flexible adjustment of force during operation.
When touching the sample, gently loosen the clamp to avoid damaging the sample.
3、 Operation steps
Sampling and Placement
Sampling: Pinch the chip or sample from the back to the front to avoid scratching the surface.
Placement: Place the sample back from front to back, ensuring gentle and stable movement.
Clamp the sample
Chip operation: Place the short edge (saw shaped head) on the front of the chip, place the long edge (flat head) on the back, and clamp the blank part.
Small samples: Use pointed tweezers to ensure precise gripping.
Larger samples: Use round headed or wide mouthed tweezers to improve stability.
Move and Release
Slowly move the tweezers to keep the sample stable and avoid slipping.
Gently open the tweezers when releasing to prevent the sample from popping out or being damaged.
4、 Precautions for use
Keep clean
Once the tweezers are dropped, touched or contaminated, they must be cleaned immediately before use.
It is strictly prohibited to touch the tweezers with acid tanks or deionized water (D.I WATER) tanks to prevent corrosion.
Specialized release
After use, return to the designated position. Special process tweezers should be stored by oneself to avoid cross contamination.
Do not use tweezers for non experimental purposes (such as gripping other objects).
Avoid damage
Maintain moderate force during operation to avoid excessive force that may cause deformation of the tweezers or damage to the sample.
It is strictly prohibited to collide or drop tweezers to prevent damage to the tip.
5、 Maintenance and upkeep
regular cleaning
After use, soak the tweezers in a mild cleaning solution for a few minutes, rinse with clean water, and air dry.
Regularly apply anti rust oil to keep the surface of the tweezers smooth and extend their service life.
Moisture proof storage
Place the tweezers in a dry and ventilated place to avoid oxidation or rust caused by humid environments.
Timely repair
If any deformation, tip wear or decreased elasticity is found in the tweezers, stop using them immediately and send them for repair.
6、 Advanced Techniques
Microscope assisted operation
Used in conjunction with a microscope, by monitoring changes in the sample, adjusting the forceps posture and force in real time, and improving operational accuracy.
Practice fine operations
Use non biological samples (such as plastic particles) for grasping and moving exercises to improve hand eye coordination and operational flexibility.
Intensity adjustment
Dumont microscope tweezersFlexibly adjust the applied pressure based on the sample material and size to avoid damaging fragile tissues or cells.