NKS sand comes in two varieties

FIRST:
It is for Concrete and has maximum particle size of 4.5 mm and 150 micron passing of not more than 5%.

SECOND:
It is for Plastering and has a maximum particle size 2.36 mm and 150 micron passing of not more than 5%.



Graduation of various sands compared with IS 383 Zone 2 sand limits

0.15mm 0.3mm 0.6mm 1.18mm 2.36mm 4.75mm 10mm 20mm
NKS Washed Sand(Plaster) 5 17 39 64 94 100 100 100
NKS Washed Sand(Concrete) 5 15 35 55 82 100 100 100
Natural Sand 1 3 15 40 72 86 96 100
Crushed Sand 14 21 33 46 72 94 100 100
IS 383 Zone 2 Upper Limit 10 30 59 90 100 100 100 100
IS 383 Zone 2 Lower Limit 0 8 35 55 75 90 100 100