Ltd.;Suzhou Xiaosong Science & Technology Development Co.
发明人:
申请号：
EP17892308.2
公开号：
EP3571993A1
申请日:
2017.08.09
申请国别(地区):
EP
年份:
2019
代理人:
摘要：
A method for developing biological trace evidence on a porous object comprises: spraying a biological fluorescent development reagent on a porous object or immersing the porous object in the biological fluorescent development reagent； drying the porous object in an environment having a relative humidity of less than 40% at a temperature of 50-120°C； irradiating the dried porous object with a laser having a wavelength of 532 nm and a full-width-half-maximum of less than 1 nm； controlling such that a surface of the porous object is illuminated with an illuminance of over 300,000 lux, such that biological trace evidence on the porous object can be developed using a filter only allowing light having wavelengths greater than 540 nm to pass through. The biological fluorescent development reagent is formed from a raw material formulation comprising the following components, in percent by weight: 0.02-0.5% of indolindione； 4-10% of ethylacetate； 0.5-1.5% of glycerol； 5-15.5% of absolute alcohol； and 73.5-90% of petroleum ether. The biological fluorescent development reagent used in the present invention produces no strong acid odor, and thus does not cause an unpleasant experience to an operator.
