China Perlite Expanded 3-6mm 4-8mm for Hydroponics

1.Expanded perlite
2.Size:4-8MM3-6MM2-4MM1-3MM
3.Bulk density:80-120kgs/m3
4.SiO2:68-74%
5.Manufacturer

Perlite in the steel and Foundry Industries
Perlite insulation is used in high temperature applications in the steel and foundry industries such as ladle topping, hot topping and risering, in topping compounds, in exothermic and insulating shapes, as a cushioning agent, in molding sand and in the manufacture of refractory blocks and bricks.

Softening temperature890-1100 °CSiO270 ~ 75Melting temperature1260 °CAl2O312 ~ 16Cellular structureopen-cellularFe2O30.15 ~ 1.5Porosity97 % by volumeMgO0.2 ~ 0.5Moisture content( in the open air)Up to 0.5 % by weightCaO0.1 ~ 2.0Max. moisture contentUp to 900 % by weightNa2O2.5 ~ 5.0Density of the perlite ore2200 to 2400 kg/m3K2O1.0 ~ 4.0Density 1200 kg/m3PH6.5-7.5Bulk density70-120kg/m³

Raw perlite ore Size:

12-16 mesh, 14-20 mesh, 16-32 mesh, 20-40 mesh,
30-50 mesh, 50-70 mesh 70-90 mesh 90-150 mesh 200-325 mesh
0.1-1 mm 0.5-1.5 mm 0.06-2.5 mm 0.3-1 mm 1-3 mm2-4 mm,3-5 mm etc
Perlite Application
Perlite is used for soil amendment and has a number of properties and one of the most important is that it is able to retain moisture without allowing the soil or growing medium to become wet and soggy. Used in potting mixes as well as in hydroponics, it is also useful as a soil amendment.So a product that retains moisture and improves drainage sounds like a useful addition to many growing mediums and indeed it is.
Other informations

PackingExpanded perlite :100 liter bag ,1000liter bag, 1500liter bag ,or as per customer's demandsTrade termsFOB CNF CIFPayments terms1).T/T 50%advance ,the balance against copy of B/L
2).Irrevocable L/C
3).NegotiatedDelivery time1).After we receive deposit within 7-10days
2).After we receive L/C within 7-10days
3).NegotiatedSampleSample is free within 1kgsMOQ20`ft containerLoading portTianjin port ,China