Api-Bioxal 312g (New Formulation) Api-Bioxal 312g (new formulation) is a highly effective oxalic acid-based treatment for the control of Varroa destructor in honey bee colonies. Manufactured by Chemichals Laif, this updated formulation offers improved solubility and flexibility, ensuring consistent preparation and reliable application. Simon the Beekeeper is an official UK distributor for Chemichals Laif, and we hold a Wholesale Dealer’s Licence certified by the Veterinary Medicines Directorate (VMD)—so you can be confident you are purchasing genuine, authorised product from a trusted UK supplier. The 312g pack is ideal for commercial and large-scale beekeepers, offering excellent value for treating multiple colonies while maintaining precise and repeatable dosing. Key Features New improved formulation for faster dissolution and easier mixing Proven varroa control when used correctly Flexible application methods: trickle (dribble), spray, or sublimation (vaporisation) Large 312g pack size – ideal for commercial or multi-apiary use Supplied by an official UK distributor with VMD-certified wholesale licence Suitable for organic beekeeping (subject to local regulations) How to Use & Dosage Api-Bioxal can be applied using three different methods depending on your preferred treatment approach: 1. Trickling (Dribble Method) Dissolve 31g in 1 litre of 1:1 sugar syrup (1kg sugar + 1L water) Apply 5ml per occupied seam of bees Maximum 50ml per colony 👉 A 312g pack provides enough product for multiple large-scale treatments. 2. Sublimation (Vaporisation) Use 2.3g per hive Apply using an approved oxalic acid vaporiser 👉 A 312g pack treats approximately 135 hives via sublimation. 3. Spraying Method Dissolve 31g in 500ml of clean water Spray 3–4ml per side of each comb covered with bees 👉 Suitable for nucleus colonies, swarms, or packages. When to Use Apply during broodless periods for maximum effectiveness Commonly used in late autumn and winter Can be used at other times only when little or no brood is present Active Ingredient Oxalic Acid Dihydrate Important Information For use in honey bee colonies only Do not apply during honey flow Always wear appropriate PPE (gloves, eye protection, respirator for vaporisation) Use strictly in accordance with label instructions and UK regulations
