... liquid 3.PH3.5-5 4.Delivery time:10-20days Boron Liquid Product feature: Black brown liquid, pH: 6-8, specific ... ≥200g/L, N≥90g/L, Organic matter≥200g/LEfficacy: Correct Boron deficiency, involved in the synthesis of cell wall composing, promote ... .Validity: Two yearsPacking: 200L/drum or on customer’s request Boron liquid