This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.
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Nark II KN reagent is a narcotic field test reagent intended for presumptive field drug testing.
The KN reagent is used to test for THC in marijuana dried plant material, seeds, or fresh green plant material.