All Inorganic Standards are Certified Reference Materials (CRM), produced and calibrated under a quality system that is: ISO 9001 certified accredited according to ISO/IEC 17025 - Testing accredited according to ISO 17034 - Reference Material Producer - Inorganic CRM > Ion Chromatography CRM > Multi-Ion Standards - Product: 2 components: N (NO3-) 1000mg/l ; P (PO43-) 100mg/l in H2O - Volume: 100ml bottle - Shelf life: 24 months - Storage: Store under normal laboratory conditions, at temperatures between 15°C to 25°C - CRM, ISO 17034 and ISO 17025 - Ref: CM 7394 - Sample CoA This item is not kept in stock: Manufacture is after order date for this product. Delivery time is 2 to 4 weeks and products are always shipped with the full available shelf life.