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65% Formic Acid – Ready for Nassenheider Evaporators

Important: Formic Acid can't be shipped to rural addresses. See shipping details at the bottom of this page or contact us to discuss your options. Shipping may take a few extra days.

Temporary Shipping Delay: We are currently experiencing delays of 2 to 3 weeks for delivery. We appreciate your patience while we resolve this.

For Use with Nassenheider Evaporators

This 65% Formic Acid solution is prepared for use with the Nassenheider Professional Evaporator, enabling slow and consistent evaporation over approximately 20 days. Designed for easy handling and consistent performance in temperature-controlled applications.

Key Features:

• Pre-Mixed 65% Solution – No dilution or mixing required
• Steady Release Profile – Suited to devices such as the Nassenheider Evaporator
• Available in Two Sizes – Choose between 1.15kg bottles or 23kg drums
• Compatible with Common Application Devices – Used in both professional and hobbyist settings

Available Sizes:

• 1.15kg Bottle – Ideal for small-scale applications
• 23kg Drum – Suitable for bulk or repeated use

Application:

Add the required amount to your Nassenheider Evaporator following the manufacturer’s instructions. Evaporation may occur over a period of approximately 20 days depending on environmental conditions. Always follow all safety and handling guidelines.

Safety Guidelines:

• Wear protective gloves and safety goggles when handling
• Use in a well-ventilated area away from heat and sunlight
• Keep out of reach of children and animals
• Store upright in a cool, dry location

Shipping Information

Formic Acid is classified as a Dangerous Good (DG), and special transport conditions apply:

1.15kg Bottles:

• Ships via courier to urban addresses only (no rural delivery)
• Up to 6 bottles can ship in one parcel for the same DG charge

23kg Drums:

• Must be shipped via truck to urban business addresses only
• Freight costs are better value for 4+ drums per shipment

Freight Estimation:

After adding items to your cart, proceed to checkout to view the estimated shipping cost. If the rate looks high, return to your cart and submit a quote request for a more accurate freight price.

Need help? Contact us for assistance with bulk shipping or delivery options.

⚠ Disclaimer

This product is not advertised or sold for any agricultural compound use as defined under the ACVM Act 1997, including but not limited to the treatment or control of Varroa mites. If you require a registered product for such use, please consult an appropriate registered compound or seek professional advice.

Note: Only one per customer

Hive tool. Stainless steel, 157mm long. Flat and very compact.

Premium Full Depth Wooden Package with Plastic frames.

Choose between many options on how you want your package.

All the packages come with:

1 x HiveMaster Wooden Vented Floor - Note different to picture shown.

1 x Heavy Duty Emlock

Treatment:

Undipped - This means your high quality Russian Pine boxes are assembled with stainless screws but is in its natural state and will need some kind of protection from the weather.

Dipped - The box has been assembled with 24 stainless steel screws then dipped in hot Microcrystalline for 9 to 10 minutes to preserve the timber for a long life outside. Microcrystalline is similar to Paraffin Wax but is a higher quality and has a melting point of 80 degrees. Paraffin Wax has been commonly used for beehive boxes but it will melt at 60 degrees and can leach out of the timber boxes on a hot summer day. This will leave them susceptible to rotting! 

Storeys:

1 Box High - This means your package will include one full depth assembled russian pine super. The super will contain 10 x full depth 33mm Frames assembled and fitted with Medium Brood 212 foundation.

2 Boxes High - This means your package will include two full depth assembled russian pine supers. The supers will contain 20 x full depth 33mm Frames assembled and fitted with Medium Brood 212 foundation.

3 Boxes High - This means your package will include three full depth assembled russian pine supers. The supers will contain 30 x full depth 33mm Frames assembled and fitted with Medium Brood 212 foundation. Also included, Plastic queen excluder with top entry,  to go between the 2nd and 3rd box.

Roof:

Technoset Roof with Top Feeder - This means your package will include a Technoset Insulated and Vented roof with a 7 Litre feeder. The features a drown design with safe bee drink areas. The feeder fits neatly inside the Technoset roof and takes no extra space. It doubles up as a hive mat and can be left on the beehive all year round. the vents allows damp air to exit up through the feeder vents and out the roof vents.

Galvanized Roof with Hive mat - With this option your package will include a Standard Galvanised roof with sprung ends and a thickness of 0.55mm. A hive mat is also included. The hive mat rim is made from russian pine timber, treated in micro-crystalline wax to make it last. The hardboard is also oil tempered both sides to make it last.

Sheet Size: 203 x 195mm

This is for one sheet only. Two sheets required per Technoset comb honey frame.

Please contact us for carton prices.

Approximately 765 Sheets fit in a carton.

The Technoset No.2 Comb Honey Frames can be viewed here.

All of the beeswax used for this comb foundation is first heated to approximately 110 degrees Celsius before being micro filtered to remove all dross and moisture. This ensures that when you buy our comb foundation, you are only paying for pure beeswax.

The filtered liquid beeswax then passes to the Weed Process sheeting machine.  This converts the beeswax from a liquid state into a continuous flat sheet and is one of the secrets of making high quality comb foundation.  During this process, the beeswax gains greatly in elasticity and strength to the point where a piece of cold comb foundation can be scrunched up and then flattened out again without breaking.

The rolls of sheet then pass to the automatic milling machine. The pure beeswax sheet passes between two precision engraved rollers which imprint the pattern onto the beeswax. The continuous sheet is then cut to size. 

Throughout the process, stringent quality control checks are continuously carried out. The life of our Comb Foundation is indefinite if stored in proper packaging and in dry conditions. Because of its purity, it is not attacked by wax moths.

Known as the very best smoker available to beekeepers, Dadant smokers are built to last.

This is their 4 x 7 Stainless Steel Smoker with Shield.

It has excellent smoke output and superior bellows design with Hinge pins, keepers that last and last and . . . .

Made in the USA from only the very best materials. 

Please order in multiples of 2 units. That is how they are packaged at the factory, with 46 evaporators packed per carton. Please note: the evaporator is sold without 65% Formic Acid. Click here for Formic Acid.

Take control of hive health effortlessly with the Nassenheider Professional Evaporator. This long-term evaporation system is designed for safe and effective treatment in beehives. Perfect for autumn (and spring) use, it utilizes a 65% formic acid (FA) solution for consistent evaporation over a 20-day period when using the No.2 wick. Beehives with high pest pressure can be brought into balance in a relatively short space of time. In areas with high re-infestation issues, it is recommended to do 2 treatments. For treatments in summer or during a honey flow, we recommend using Oxalic Acid Extended-release (OAE) strips.

Key Benefits:

• Cost-Effective Hive Care – A reliable, long-term solution that reduces expenses.
• Healthier Bees – Clients report reduced symptoms of chalkbrood and nosema after a 20-day FA treatment.
• Boosted Honey Yields – Stronger colonies mean better honey production.
• No Resistance – Nowhere in the world have pests grown resistance to these natural products – Formic Acid, Oxalic Acid or Thymol.
• Proven over Many Years – European beekeepers have been using natural products for over 40 years.
• No Residues – Formic Acid and Oxalic Acid leave zero residues in the comb.
• Less Sugar Feeding – Healthier bees naturally gather more food during the off-season.
• Simplified Safety – Easy-to-follow procedures minimize risks when handling formic acid. 65% FA is safer to handle than common off-the-shelf 84% FA.

Product Features:

• Complete Kit: Includes the evaporator, 250ml bottle, and three wick sizes for adjustable evaporation rates.
• No. 1 Wick: Very slow evaporation and suggested for use in nucleus colonies.
• No. 2 Wick: Ideal for single brood box colonies, evaporating 250ml of FA in approximately 18 days. Filling the bottle to the top (≈290ml) lasts around 20 days — about 14ml/day.
• No. 3 Wick: Recommended for double brood box colonies. One of our tests in Jan 2025 showed 250ml evaporation in 7 days (≈36ml/day).
• Versatile Design: The evaporator requires a 75mm spacer rim located directly above the brood box. 90mm top feeder rims or empty supers can also be used. 

Extra 250ml Nassenheider bottle? Click Here.

Replacement Wick & Cloth Set? Click here.

Need a rim? Click Here.

Want mesh on the bottom of the rim? Shop Here

Evaporation Rates:

With 65% Formic Acid, it is recommended to evaporate between 9 and 22 millilitres per day per full-depth brood box. 22ml per day in one brood box is at a level where it is thought to disrupt pests under the cell cap. However, that high level of exposure is not necessary for good control. 14ml per day will eliminate virtually all phoretic pests (those on adult bees). Drone cells are capped for 14 days, so as long as there is continuous application for at least 15 days, effective control can be achieved.

Safety

Formic Acid liquid, and the gas from the liquid, can damage skin and eye tissue. It is very important that suitable protective clothing is worn. This is especially important when filling bottles from bulk containers. A respirator mask with face protection, nitrile gloves, PVC apron, and overalls should all be worn. Replacing empty bottles with full bottles in the field requires nitrile gloves as a minimum. Stand upwind when performing this procedure.

Field-Tested Results:

In a Featherston field trial, where autumn hive health management was historically challenging, the Nassenheider Evaporator delivered outstanding results, significantly improving colony strength and overall health. Read the full blog HERE.

Usage Tips:

• Assemble evaporator parts with the desired wick size.
• Spread the fleece cloth in the tray and secure it with the clips provided. Double up the cloth at one end so the post for the bottle clamp is not covered.
• Fit the bottle holder onto the post.
• In an outdoor location and with suitable protective clothing, fill the bottle with 250ml of FA and secure the lid for safe transportation.
• At the apiary site, place the tray on top of the brood nest.
• Remove lid from bottle and screw on the evaporator while the bottle is vertical.
• Check the screw connection for tightness to ensure safe operation.
• Place the bottle with evaporator into the bottle holder. See video for more info.
• Fit a 75mm rim to surround the evaporator. Fit hive mat and lid. 
• For creative beekeepers: Cut old full-depth boxes into three rims and paraffin-dip them for sterilization.
• Top Tip: Extra bottles can be purchased separately here. Fill hundreds of bottles safely, then fit them to evaporators in the field as required. The beekeeper is exposed to minimal FA and only needs protective gloves — similar to handling Formic Pro pads.
• NB. If your beehive has a vented base, it is recommended to block the vents and leave the front entrance fully open for best results.

For more info and FAQ: Click here.

Why Choose Nassenheider?

Engineered for performance and safety, the Nassenheider Professional Evaporator is trusted by beekeepers to protect their hives effectively. With 46 units per carton, stock up for your apiary or share with fellow beekeepers. Order in multiples of 46 for the best value!

Use with 65% Formic Acid: Available here.

Our own design - requested by many beekeepers!

Protect your hands while caring for your bees with our Short Gauntlet Bee Gloves. 

Made from durable cow hide with a reinforced wrist design, these gloves offer maximum protection with minimal wear and tear.

The thick elastic band keeps the bees out, and they are available in sizes XS to 3XL.

You can find the size chart here.

Made in Pakistan

Sheet Size: 422 x 157mm

All of the beeswax used for this comb foundation is first heated to approximately 110 degrees Celsius before being micro filtered to remove all dross and moisture. This ensures that when you buy our comb foundation, you are only paying for pure beeswax.

The filtered liquid beeswax then passes to the sheeting machine. This converts the beeswax from a liquid state into a continuous flat sheet and is one of the secrets of making high quality comb foundation. During this process, the beeswax gains greatly in elasticity and strength to the point where a piece of cold comb foundation can be scrunched up and then flattened out again without breaking.

The rolls of sheet then pass to the automatic milling machine. The pure beeswax sheet passes between two precision engraved rollers which imprint the pattern onto the beeswax. The continuous sheet is then cut to size.

Throughout the process, stringent quality control checks are continuously carried out. The life of our Comb Foundation is indefinite if stored in proper packaging and in dry conditions. Because of its purity, it is not attacked by wax moths.

Full depth plastic frame for Drone comb. Green.

Commonly used for monitoring Varroa numbers and also to help control the Varroa Mites.

Available as Coated in Beeswax or Unwaxed.

The Ultimate Grab and Go super package. Whatever you might need an additional super for, this is right ready to go and give fabulous results!

Full depth Technoset brood box with Russian Pine frames ready to use.

The 10 frames have 33mm wide endbars with brass eyelets and 4 horizontal support wires, and are fitted with medium brood wax foundation. The 212mm deep foundation fits into the groove in the bottom bar.

Find out more about the Technoset box here

NOTE: Colour of the box sent will be random.

One of the Best Quality Hive tools available.

Made in Europe from Tempered High Carbon steel.

This means that under very high load it will simply flex not bend or snap like the common hive tool.

Kelly Type - 250mm High

Start Extracting Honey Like a Pro – All-in-One Extraction Kit

Take the hassle out of honey harvesting with this complete extraction package. Perfect for hobbyist beekeepers, it gives you everything you need to extract, strain, and jar your own honey efficiently.

Key Features:

• Choice of 2 Frame Plastic or Metal extractor or a 4 Frame Extractor 

  (fits Full Depth, 3/4 and 1/2 standard frames)

• 2 Layer stainless steel strainer

• Electric Uncapping Knife (240v)

• Uncapping Fork

• 38L / 50Kg Stainless Steel Honey Drum with honey gate

• Plastic Honey Roller for thicker honey

• Complete setup to start extracting your own honey today

Top Feeder for Sugar Syrup

Has a 9.5 Litre capacity

Sits in a separate wooden rim on top of the hive.

Corner caps and Chimney caps are available to reduce drowning.

Feeders come with center holes punched out.

Nuc Box Entry Discs – Galvanised Beehive Entrances

Control access to your nucleus hives with durable galvanised entry discs. Available in two sizes to suit different hive setups, these discs provide flexible settings for bees, queens, and ventilation. Perfect for Nucleus hives, they ensure hive security, airflow, and precise management of bee traffic.

Key Features:

• Sizes available: 68mm and 125mm diameter

• 125mm disc settings:

  • Fully open with 44mm diameter entry

  • Open with queen excluder slots only

  • Closed with small vent holes

• 68mm disc settings:

  • Fully open with 24mm diameter entry

  • Queen excluder entry 24mm wide

  • Two closed positions with vents

• Durable galvanised steel: Rust-resistant and long-lasting

• Flexible hive management: Adjust entrance for colony activity, queen control, or hive protection

• Volume discounts: Available – contact us with quantity and freight details

Click here to contact us now.

Made in NZ - No fumigation on import!

Flat packed ready to fold into shape.

Soften the crease with water and then fold into shape

Has a small slot to insert thin super foundation

Dimensions are 108mm square and 45mm wide.

Eco-friendly packaging available here

Cardboard cartons to suit the sections available here

Kitsets frames to take 3 sections or 4 sections available here

Precut thin super foundation available here

Checkout the full instruction guide here

All branders are fitted with slotted brass heads. Simply slide in the desired characters and tighten lock plates. Most clients brand the frames and boxes with their apiary registration number.

20mm Characters for the Handheld and Drill Press Electric Branding Irons.

1 amp 12 volt battery charger.

For charging the battery that you can use with the Vaporizer.

Wooden Frame for Hive Mat.

Pre-drilled - assemble with our 38mm screws. 

21mm thick Russian Pine timber with rounded outer edges.

Top quality.

Corner Caps for 9.5L Top Feeder

Set of 4

Honey capacity approx. 250g.

Thin Super beeswax foundation is required. 96mm x 64mm. Click here to order. The wax sheets need to be ""welded"" in place. Heat up some pure beeswax in a slow cooker or a crock pot and a apply a thin bead of molten wax on the edges.

12 of these fit into a special full depth frame. Click here to order.

The bees make the natural comb honey in the same container that it is sold in. Simply add a cap top and bottom, apply sticky label to seal and it is ready to sell. No mess or cutting required.

Caution! Do not use these frames in areas where the bees could collect poisonous Tutin during the months of January to May. For more info, click on the links below.

Tutu plant info

Tutin regulations

Embedding Tool for fitting foundation to frames.

240v

Chimney Cap for 9.5L Top Feeder

Stainless steel queen excluder for Technoset beehives.

Has a top entry giving the bees the option of a quicker entry and exit.

The Ultimate Grab and Go super package. Whatever you might need an additional super for, this is right ready to go and give fabulous results!

3/4 depth Technoset Box with 10 Waxed Russian Pine Frames, (33mm end bars) and Medium Brood foundation fitted.

Find out more on the 3/4d Technoset Brood boxes here.

Box height 193mm. Frame end bar height 183mm.

NOTE: Colour of the box sent will be random.