Ten troubleshooting methods commonly used in Lab Storage Cabinet
Storage cabinet in lab will often encounter some unexpected situation, these "little trouble" can bring a lot of inconvenience to experiment, such as the cementation cork can't open, instrument on the dirt is difficult to eliminate, as "liquid emulsification occur, and so on. If appropriate methods or techniques can be taken to deal with it, these problems will be solved.
1. Open the sticky glass grinding mouth
When the grinding part of the glass instrument cannot be opened due to the adhesion, the following methods can be adopted to deal with it.
(1) Lab Storage Cabinet knock on the side of the ground by tapping the woodwork, causing it to gradually loosen and disengage from the vibration. For the cementation of reagent bottles, separatory funnel grinding plug and so on, can be the instrument of the plug and bottle card on edges and corners of the test bench or place, reoccupy wood along with instrument axis into the direction of 70 ° Angle gently knock, intermittently rotating instrument at the same time, so repeatedly for several times, usually you can open the grinding of cement was not serious.
(2) Lab Storage Cabinet heating some of the sticky ground, it is inconvenient to knock or knock, and can be heated to the outer layer of the cementing part, so that it is heated and expanded and separated from the inner layer. Use hot wet cloth to apply "hot compress" to the cementing place, using the hair dryer or the floating flame to bake the grinding mouth and so on.
(3) infiltrating some of the grinding holes due to the erosion of the medicine, or the complex valuable instrument, which is not suitable for tapping and heating, can be opened with water or dilute hydrochloric acid for several hours. As urgent need instruments, also can use penetration strong organic solvent such as benzene, ethyl acetate, petroleum ether and dioctyl succinic acid ester sulfonate) drops to the ground of the gap between the mouth, make the penetration of infiltrating into the cementation of parts, and away from each other.
2. Open the fastening screw cap
When the screw cap cannot be turned on, Lab Storage Cabinet use a hair dryer or a small flame to bake the cap around it, so that it is heated, and then used to cover the bottle cap and force it to turn away.
If the bottle should not be equipped with heating or flammable substances, preferable a stout rope, one end tied to a fixed object (such as door handle), put the rope in the lid clockwise around a circle, then tighten the rope on the other side of the hand, holding the bottle of forcibly push forward, can open the bottle cap.
Remove the adhesive thermometer
When the thermometer or glass tube with rubber plug or hose bonding and difficult to remove, use a small screwdriver or insert the tip of the knife file thermometer (or glass tube) and rubber plug (or hose), to form the gap, drop a few drops of water again, so operation and expanding around the thermometer (or tube), at the same time, will soon be removed. Also available that fit into a thermometer borer (or tube), dip in on a little glycerin or water, from the end of the thermometer set in, Lab Storage Cabinet gently pressure, rotation and propulsion, when to turn out again dipped in lubricant, continue to spin, after repeating several times, you can remove the thermometer (or glass tube).
Remove special dirt from your instrument
When backflow operation or concentrated solution, often have the crystallization precipitation of the flask wall on the top of the liquid level, Lab Storage Cabinet and adhesion strong, not only can not continue to participate in the reaction, sometimes because of poor thermal stability and decomposition of gradual change color. In this case, the flask can be gently shaken to the inside solution to dissolve the crystal. If the device is limited, can't shake the flask, the cold wet cloth can be applied to the upper part of the flask, and the crystallization of the solvent condensation will be dissolved.
Clean up the spilled mercury
Mercury manometer and mercury thermometer are commonly used in Lab Storage Cabinet. There is a "mercury spill" if the operation is improper or the thermometer is broken. Mercury vapour is very harmful to human body, it must be timely and thoroughly cleaned up the mercury, and not let it be lost. The cleaning method is more, can depend on different situation, choose to use.