Sodium Hydroxide Reagent with Metal Inhibitors - Lamotte Water Test Reagent (4259-E) Sodium Hydroxide Reagent with Metal Inhibitors - Lamotte Water Test Reagent (4259-E) Product form SKU: MT200C $16.99 Quantity Add to cart Free Shipping on orders over $79 This item ships freight only. You're getting the best possible deal on this item, thanks to our Minimum Advertised Price (MAP) policy. This item is available for Pre-Order. Full payment is required to reserve stock.