The crushing of bones and teeth is an important biological evidence test for forensic science. Hard physical evidence such as bones and teeth extracted from the scene of the case are usually crushed and ground. After crushing the bones and teeth and other physical evidence, genotyping and analysis can be directly carried out to obtain the victim. Relevant genetic information of people or victims.
Brief introduction
Shanghai Jingxin Bone and Teeth Grinder is mainly used in DNA laboratory to detect the pretreatment of bones and teeth or the fields where teeth and bones need to be crushed. The crushing process adopts a one-time or re-sterilizable crushing tank, which can prevent environmental pollution and cross-contamination, and has high practical value.
Use a scalpel to clean the bone surface layer and dirt and saw it into small pieces, clean the tooth surface, soak it in 5% (W/V) sodium hypochlorite solution for 15 minutes, discard the sodium hypochlorite solution, and rinse it with distilled water for 3 times to remove sodium hypochlorite. Soak in absolute ethanol for 15 min to remove residual water {5}, dry in a fume hood, and grind bone chips and teeth into bone powder and dentifrice using Shanghai Jingxin Bone and Teeth Grinder.
Product usage
1. It is used in the DNA laboratory of the public security judicial system to crush bones and teeth;
2. Suitable for grinding and crushing of various plant tissues including roots, stems, leaves, flowers, fruits, seeds and other samples;
3. Suitable for grinding and crushing various animal tissues including brain, heart, lung, stomach, liver, thymus, kidney, intestine, lymph node, muscle and other samples;
4. Suitable for grinding and crushing of fungi and bacteria including yeast, Escherichia coli and other samples;
5. Suitable for grinding and crushing of food and medicine;
6. Suitable for grinding and crushing of volatile samples including coal, oil shale, wax products and other samples;
7. Suitable for grinding and crushing of plastics, polymers including PE, PS, textiles, resins and other samples.
Grinding renderings:
Technical parameter:
The main parameters | parameter range |
Application field | Tissue homogenization, grinding, cell disruption, homogenization, material dispersion, preparation, sample mixing, shaking |
Compatible sample size | 48*(0.2-0.5mL), 48*2mL, 12*5mL, 8*(7-15)mL, 2*25mL, 2*50mL |
Feed and discharge size | There is no requirement for feeding, according to the size of the adapter; the particle size of the discharge is ~5um |
Homogenization speed | 0—70 HZ/sec, that is, the number of oscillations is 300-4000 times/min |
Grinding Ball Diameter/Material | 0.1-30mm / stainless steel, chrome steel, zirconia, tungsten carbide, quartz sand |
Grinding method | Wet grinding, dry grinding, cryogenic grinding |
Dimensions | 400*280*530 |
Weight | 30KG |
LCD | LCD display for easy and intuitive operation |
operating hours | 0-9999s, users can set by themselves |
Acceleration/Deceleration | Maximum speed in 2 seconds / Small speed in 2 seconds |
Noise level | <55dB |
Upgradable freezing function | Yes |
Precautions:
1. The instrument should be placed in a dry and ventilated environment;
2. The working voltage of the instrument is 220V;
3. When using liquid nitrogen, protective measures should be taken to prevent frostbite;
4. Fix the adapter before grinding, tighten the vertical positioning screw, and fasten the safety lock;
5. The samples should be placed as symmetrically as possible to ensure the force balance during grinding;
6. After grinding, please turn off the power and return the safety lock;
7. Clean the adapter regularly to prevent the residual medicine or sample from corroding it.
