The quality evaluation standard of a water jet garnet sand have hardness, clean without dust, uniform particles without large particles,
these are to ensure that the water jet garnet sand has a good cutting speed,
Besides these, there are some other minor details need to be paid attention, such as packing and moisture resistance. 
When affected with damp, the water jet garnet sand may form small pieces, resulting in large particles blocking sand channel pipe, so the moisture-proof problem of water jet sand is very important.  
A.Purchase regular manufacturer products, ensure the drying process of products in place
B.Do a good job of protection during transportation, avoid the damp or rain problems
C.Store in a dry environment, clean the remaining sand in time, seal well and have a moisture-proof consciousness. 
In short, water jet sand moistureproof can cooperate with the smooth work of water jet, JUNDA garnet sand do well in the early, it can save a lot of energy in the late.