Teat sealants for dairy cattle milking: technical comparison of pre- and post-dipping
Teat hygiene before and after milking is the management measure with the best cost-to-result ratio for reducing contagious and environmental mastitis. But "dip" is a term that groups together very different chemistries (povidone-iodine, lactic acid, chlorhexidine, activated chlorite), with contact times, application formats and precautions that are not interchangeable. This guide compares those families on technical criteria and places the Instaquim range with the exact figures from its technical data sheets.
Technical selection criteria
- Time of application: pre-dipping (hygiene before attaching the teat cups, always removed) or post-dipping (sealing after milking, left to act). Some products serve both uses; most do not.
- Active substance: povidone-iodine, lactic acid, chlorhexidine digluconate or sodium chlorite activated at the time of use. Each has a different profile of action, colour, viscosity and skin compatibility.
- Application format: dipping with a dip cup, spraying or foam. Foam prolongs contact with less product and without dripping; dipping with a viscous product leaves more film on the teat.
- Contact time and removal: in pre-dipping the minimum action time and complete removal of the product before milking are mandatory; in post-dipping, the film must be removed before the next milking.
- Skin tolerance: presence of emollients, glycerine or skin protectants in the formula. This determines the condition of the teat skin throughout lactation.
- Regulatory framework: veterinary hygiene disinfectants fall under Regulation (EU) No 528/2012 on biocides and their labelling follows Regulation (EC) No 1272/2008 (CLP). Always request the up-to-date safety data sheet.
Types of supplier in the market
The European market is shared between three supplier profiles; the difference lies in service, breadth of range and technical proximity.
- Hygiene and animal hygiene multinationals: very broad ranges, global geographical coverage, multi-site contracts and service programmes. In return, more expensive consumables and less flexibility for medium-sized farms.
- Milking equipment manufacturers: they integrate consumables and dosing with their milking machines and robots. Maximum convenience if the parlour is the same brand; supplier dependence and premium cost if it is not.
- Regional chemical manufacturers: shorter but complete ranges for the milking cycle, clear technical data sheets, direct supply and local support. This is Instaquim's segment.
Comparative technical analysis
Four chemical families from the Instaquim catalogue, with the figures from their technical data sheets.
| Criterion | Povidone-iodine | Lactic acid | Chlorhexidine | Two components (lactic + chlorite) |
|---|---|---|---|---|
| Products | Iod Pro (post-milking), Iod Pv (pre- and post-milking) | Nipplac Pro (post-milking), Nipplac Foam (pre-milking) | Nippclean (pre-milking) | Condnipple A + Condnipple B (post-milking) |
| Time of use | Iod Pro: after milking. Iod Pv: before and after | Nipplac Pro: after. Nipplac Foam: before | Before milking | Immediately after milking |
| Application method | Neat by dipping (Iod Pro); neat by spraying or dipping (Iod Pv) | Neat by dipping (Nipplac Pro); neat with a foam applicator (Nipplac Foam) | Neat using specific foam applicators | Mix of 50 ml of Condnipple B per litre of Condnipple A, with a dip cup |
| Contact time / removal | Remove residues before the next milking (Iod Pro); dry the teats completely before milking (Iod Pv) | Nipplac Foam: at least 25 s and remove completely before milking. Nipplac Pro: remove residues before the next milking | About 30 seconds and remove before milking | Leave to air-dry, do not wipe dry with a cloth |
| Product pH | 4.7 ± 0.3 (both) | Nipplac Pro: 4 ± 0.8. Nipplac Foam: 3.5 ± 0.5 | 4.5 ± 0.3 | Condnipple A: 2.5 ± 0.5. Condnipple B (at 1 %): 10.5 ± 0.5 |
| Skin care | Emollients; Iod Pro contains softening agents that prevent irritation | Nipplac Pro: skin protectants, helps heal small wounds. Nipplac Foam: glycerine and emollients | Surfactants and skin protectants | Condnipple A: glycerine and emollients; conditioning ingredients that prevent irritation |
| Practical advantage | Reference antiseptic; Iod Pro forms a protective film that helps seal the teat | No iodine or halogens; Nipplac Foam does not drip, avoiding product loss | The compact foam prolongs contact time on the skin | Protective layer formed in situ; allows the quantity prepared to be adjusted |
| Key precaution | H319 serious eye irritation; Iod Pro also H412 (harmful to aquatic life) | H319 serious eye irritation | H319 serious eye irritation | Condnipple B: H312, H315, H318 and EUH032 (contact with acids liberates very toxic gas); mix in a well-ventilated area |
| Pack size | 20 kg | 20 kg | 25 kg | Condnipple A 20 kg; Condnipple B 1 kg |
Instaquim's positioning
Instaquim does not compete on breadth of livestock range or on integration with milking equipment: its teat catalogue is limited to seven references that cover the complete cycle with four different chemistries. That makes it possible to choose by chemistry rather than by brand: iodine (Iod Pro, Iod Pv), lactic acid (Nipplac Pro, Nipplac Foam), chlorhexidine foam (Nippclean) or a protective layer prepared in situ (Condnipple A + B).
All the data sheets specify application of the neat product, without dilution, which eliminates the most common dosing error with concentrated dips. The trade-off is that consumption per cow depends on the format: foam (Nipplac Foam, Nippclean) reduces usage and dripping in pre-dipping; dipping with a viscous product (Iod Pro, Nipplac Pro) leaves more film in post-dipping. The limitations must also be stated: the data sheets do not include standardised tests against specific strains or drying times, and Instaquim does not offer integrated dosing units or service programmes like a multinational.
When to choose each option?
Choose a hygiene multinational: when the farm is part of a group with several sites, requires service contracts with periodic audits or needs the same supplier in several countries.
Choose the equipment manufacturer's consumable: when the parlour or robot is a brand that integrates dip dosing and the manufacturer makes the warranty or technical service conditional on using its products. It is worth comparing its technical data sheet with the alternatives first.
Choose an Instaquim iodine sealant: when you are looking for the reference antiseptic in post-dipping. Iod Pro for viscous dipping after each milking; Iod Pv when you want a single aseptic product for before and after, applied by spraying or dipping and drying the teat completely before milking.
Choose lactic acid: when teat skin condition is the main problem (cracks, dryness, small handling wounds) or when you want to reduce the use of halogens. Nipplac Pro (post) and Nipplac Foam (pre) share the same chemical base.
Choose chlorhexidine foam: when pre-dipping is done with a foam applicator and you want to maximise contact time with little product. Nippclean is used neat, acts for about 30 seconds and is removed before milking.
Choose the two-component system: when the farm has staff trained to prepare the mix in a ventilated area and prefers to produce just the right amount of sealant. Condnipple A and Condnipple B are mixed at a ratio of 50 ml of B per litre of A, applied with a dip cup immediately after milking and left to air-dry.
Final considerations
There is no best dip in the abstract: there are coherent combinations of pre- and post-dipping, applied with the right format, the contact time on the data sheet and strict removal before milking. The choice should start from the herd diagnosis (somatic cell count, predominant pathogens, teat skin) and be made with the veterinarian.
Finally, two warnings that avoid trouble: no teat sealant carries the EU Ecolabel, because that label does not cover veterinary hygiene; and two-component products with sodium chlorite must always be mixed in the stated proportion and in a well-ventilated area, because in contact with acids they liberate very toxic gases.
Frequently asked questions
What is the difference between pre-dipping and post-dipping?
Pre-dipping is applied before attaching the teat cups to clean the teat of dirt and residues of the previous sealant; the product is removed completely before milking. Post-dipping is applied immediately after milking and left on the teat to form a protective layer against dirt and micro-organisms while the sphincter remains open.
Can I use the same product before and after milking?
Only if the technical data sheet provides for it. In the Instaquim catalogue, Iod Pv is formulated for pre- and post-milking treatment and is applied neat by spraying or dipping, drying the teats completely before milking. Iod Pro, Nipplac Pro and the Condnipple A + B mix are exclusively post-milking, and Nipplac Foam and Nippclean are exclusively pre-milking.
How long should a pre-milking foam sanitiser act?
It depends on the product: Nipplac Foam specifies leaving it to act for at least 25 seconds and Nippclean about 30 seconds. In both cases the product must be removed completely before milking.
How is a two-component sealant prepared and applied?
Condnipple A and Condnipple B are mixed at a ratio of 50 ml of Condnipple B per litre of Condnipple A, in a well-ventilated area. The mix is applied with a dip cup immediately after milking and left to air-dry, without wiping dry with a cloth. Condnipple B contains sodium chlorite and in contact with acids liberates very toxic gases.
Do teat sealants hold EU Ecolabel certification?
No. The European ecolabel covers categories such as surface cleaning, dishwashing or textile detergents, not veterinary hygiene products. No Instaquim teat sealant carries the EU Ecolabel.
What regulations govern teat hygiene products?
Veterinary hygiene disinfectants fall within the scope of Regulation (EU) No 528/2012 on biocides, and their hazard classification and labelling are governed by Regulation (EC) No 1272/2008 (CLP). The safety data sheet of each product details the applicable H and P statements; for example, most dips in the catalogue carry the H319 statement (serious eye irritation) and require gloves and eye protection.
Is a lactic acid sealant as effective as an iodine one?
They are different chemistries with different profiles. Povidone-iodine is the reference antiseptic in post-dipping; lactic acid is chosen above all when teat skin is the priority: Nipplac Pro, besides protecting against contamination by micro-organisms, helps heal small wounds caused by handling. Decide according to the herd's skin condition, somatic cell count and predominant pathogens, with your veterinarian.