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Quality Assurance

Specifications

With more than 30 years of experience in producing concentrated latex, we have been given qualified and punctual delivery as highest priorities in meeting international standards. In order to ensure for customer’s full satisfaction of receiving high quality product, our company uses quality parameters at a much higher standard than the specification required by ISO 2004: 1997(E).

CHARACTERISTIC
NUMATEX
NUMATEX
ISO 2004:1997 (E)
Testing Method
HA
LA
HA
LA
Total Solid Content, %, (m/m), min
61.5
61.5
61.5
61.5
ISO 124
Dry Rubber Content , %, (m/m), min
60
60
60
60
ISO 126
Non-Rubber Solid, %, (m/m), max
1.6
1.6
2.0
2.0
–
Alkalinity (as NH3), %, (m/m), calculated with respected to latex concentrate
0.6
0.29
0.6 min
0.29 max
ISO 125
Mechanical Stability, second, min
800
800
650
650
ISO 35
Coagulum content, %, (m/m), max
0.05
0.05
0.05
0.05
ISO 706
Copper Content, mg/kg of total solids, max
8
8
8
8
ISO 8053
Manganese Content , %, (m/m), max
8
8
8
8
ISO 7780
Sludge Content, % (m/m), max
0.1
0.1
0.10
0.10
ISO 2005
Volatile Fatty Acid (VFA) number, max
0.03
0.03
0.20
0.20
ISO 506
KOH Number Number, max
0.65
0.65
1.0
1.0
ISO 127

Management System Certification

At Num Rubber & Latex Co., LTd., we operate a management system in accordance with the requirement of ISO 9001 : 2015 while compiling with international standards.