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Vac-Pac® Drinking-Water Vaccine Stabilizer
Water Quality Matters in Live Vaccine Administration
Vac-Pac® is a concentrated drinking-water vaccine stabilizer developed by Animal Science Products for poultry vaccination programs.
Water quality plays an important role in the preparation and administration of live vaccines. Oxidizers, pH imbalance, and low tonicity can create conditions that compromise vaccine stability before the vaccine reaches the birds.
Vac-Pac® is formulated to help address these three water-quality challenges, supporting the preparation of drinking water for live vaccine administration.
Three Important Functions of Vac-Pac®
Oxidizer Protection — Helps address oxidizing agents in drinking water that can affect live vaccine organisms.
pH Management — Provides buffering to help manage water pH during vaccine preparation.
Electrolyte Balance — Supplies electrolytes to help address low-tonicity conditions in drinking water.

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Why Water Quality Matters During Poultry Vaccination
Drinking-water vaccination is a practical method of administering live vaccines to poultry. However, the quality of the water used to prepare and deliver those vaccines can influence the stability of the vaccine organisms before they reach the birds.
Three important water-quality conditions deserve particular attention: oxidizers, pH imbalance, and low tonicity. Together, these challenges are often described as the Triple Threat to live vaccine stability.
Oxidizers in Drinking Water
Oxidizing agents, including chlorine and chloramines, may be present in drinking-water systems. These substances are commonly used for water sanitation but can negatively affect sensitive live vaccine organisms if they remain active during vaccine preparation and administration.
Water pH Imbalance
Water that is excessively acidic or alkaline can create unfavorable conditions for live vaccine organisms. Managing pH helps provide a more suitable water environment during vaccine preparation.
Low Tonicity and Osmotic Stress
Water with insufficient dissolved electrolytes can create osmotic stress for certain live vaccine organisms. Appropriate electrolyte balance helps address this challenge during drinking-water vaccination.
Preparing Water for Live Vaccine Administration
Vac-Pac® is formulated to help address these three water-quality challenges through oxidizer management, pH buffering, and electrolyte supplementation.
By preparing the drinking water before introducing the vaccine, poultry producers can address conditions that might otherwise compromise vaccine stability during administration.
How Vac-Pac® Addresses the Triple Threat
Vac-Pac® vaccine stabilizer is formulated to address three important water-quality challenges during live vaccine administration: oxidizers, pH imbalance, and low tonicity.
Through oxidizer management, pH buffering, and electrolyte supplementation, Vac-Pac helps prepare drinking water for poultry vaccination programs.
Oxidizers
Chlorine and chloramines can affect sensitive live vaccine organisms in drinking water.
Vac-Pac helps address oxidizing agents during vaccine water preparation.
pH Imbalance
Excessively acidic or alkaline conditions may compromise live vaccine stability.
Vac-Pac provides buffering to help manage water pH during vaccine preparation.
Low Tonicity
Insufficient dissolved electrolytes can create osmotic stress for certain live vaccine organisms.
Vac-Pac supplies electrolytes to help address low-tonicity conditions.
Practical Advantages of Vac-Pac® Vaccine Stabilizer
Vac-Pac® combines three water-stabilizing functions in a concentrated formulation designed for drinking-water vaccine preparation. By addressing multiple water-quality challenges in one product, Vac-Pac offers poultry producers a practical approach to preparing water for live vaccine administration.
The following features support its use in poultry vaccination programs.
Concentrated, Water-Soluble Formulation
Vac-Pac is supplied as a concentrated product designed to dissolve in drinking water during vaccine preparation
Three Stabilizing Functions
Combines oxidizer management, pH buffering, and electrolyte supplementation in a single product.
Straightforward Water Preparation
Designed for incorporation into drinking-water preparation procedures before live vaccines are introduced.
Developed for Poultry Vaccination
Supports drinking-water preparation for live vaccine administration in poultry production systems.
Vac-Pac® is intended to support proper drinking-water preparation as part of a poultry vaccination program. Product use should follow the current Vac-Pac label, applicable vaccine manufacturer instructions, and established vaccination procedures.
Research & Technical Evidence Behind Vac-Pac®
Drinking-water quality is an important consideration when administering live poultry vaccines. Research and technical publications examine how water conditions, including the presence of oxidizers, can affect vaccine organism stability during preparation and administration.
Animal Science Products provides technical resources addressing these challenges, including research involving live Salmonella vaccines and drinking-water stabilizers.
The following materials offer additional information about vaccine stability, water-quality management, and the role of Vac-Pac® in drinking-water vaccination programs.
Featured Research: Vac-Pac® and Live Salmonella Vaccine Stability
ASP's published technical report examines the stability of the live Argus® SC/ST Salmonella vaccine in different drinking-water conditions.
The evaluation compared vaccine organisms in sterile distilled water, chlorinated water without a stabilizer, and chlorinated water treated with Vac-Pac®.
The report describes rapid vaccine inactivation in the untreated chlorinated water and improved vaccine stability in the Vac-Pac-treated water over the six-hour observation period.
Research application: Swine drinking-water vaccination.
These findings illustrate the importance of water quality and stabilization when preparing certain live vaccines. Results from this specific evaluation should not be assumed to apply to every vaccine or water system.
Live Salmonella Vaccine Stability — Research Conditions
Sterile Distilled Water
Reference condition
Chlorinated Water
Without stabilizer
Vac-Pac® Treated Water
With stabilizer
The cards summarize the study conditions and do not represent numerical vaccine viability results. The research involved a live Salmonella vaccine evaluated for swine drinking-water vaccination.
Vac-Pac® Application and Packaging
Vac-Pac® is a concentrated drinking-water vaccine stabilizer formulated for poultry and swine vaccination programs.
Proper drinking-water preparation is an important part of administering live vaccines. Vac-Pac helps address oxidizers, pH imbalance, and low tonicity before sensitive vaccine organisms are introduced into the prepared water.
Always follow the current Vac-Pac product label, the vaccine manufacturer's instructions, and the applicable veterinary vaccination protocol.
Preparing Water for Vaccination
1. Prepare the drinking-water system. Follow the established vaccination protocol and applicable water-system preparation procedures.
2. Add Vac-Pac®. Prepare the water using the mixing directions specified on the current Vac-Pac product label.
3. Mix before adding the vaccine. Distribute the stabilizer thoroughly in the water according to the product directions.
4. Introduce the vaccine. Follow the vaccine manufacturer's instructions for reconstitution, mixing, and administration.
5. Administer through the drinking-water system. Follow the established vaccination procedure and confirm that the prepared vaccine water is delivered as intended.

Vac-Pac® drinking-water vaccine stabilizer from Animal Science Products, shown in its 18.75 lb (8.5 kg) pail containing 75 individual 4 oz packages.
Vac-Pac® Technical Resources & Supporting Research
Understanding how drinking-water conditions affect live vaccine stability can help poultry and swine producers make informed decisions about vaccine preparation and administration.
Animal Science Products provides research and technical publications covering Vac-Pac®, oxidizer management, drinking-water quality, and live vaccine administration.
Explore the following resources for additional technical information and supporting research.
Vac-Pac® Product Specification Sheet
Review published product information, including preparation directions, packaging, handling, and application precautions.
View Product Spec SheetVac-Pac® and Argus® Salmonella Vaccine Stability
Examine ASP's published evaluation of a live swine Salmonella vaccine under different drinking-water conditions.
View Research PDFServing Up Solutions for Salmonella Vaccination
Explore live Salmonella vaccine rehydration, oxidizer exposure, and drinking-water stabilization in swine vaccination.
View Technical ArticleEvolution of Live Vaccine Administration
Learn about the development of drinking-water vaccination and the importance of managing water quality for live vaccines.
View Technical ResourceFrequently Asked Questions About Vac-Pac®
What is Vac-Pac® vaccine stabilizer?
Vac-Pac® is a concentrated drinking-water vaccine stabilizer developed by Animal Science Products for poultry and swine vaccination programs. It is formulated to help address oxidizers, pH imbalance, and low tonicity during live vaccine water preparation.
Why is water quality important during live vaccination?
Drinking water can contain oxidizing agents and may have pH or electrolyte conditions that affect sensitive live vaccine organisms. Preparing the water appropriately helps address these challenges before vaccines are introduced into the drinking-water system.
What is the Triple Threat to live vaccine stability?
The Triple Threat refers to three water-quality challenges: oxidizers, pH imbalance, and low tonicity. Vac-Pac® combines oxidizer management, pH buffering, and electrolyte supplementation to help address these conditions during drinking-water vaccine preparation.
What is the difference between Vac-Pac® and Vac-Pac Plus®?
Both Vac-Pac® and Vac-Pac Plus® are drinking-water vaccine stabilizers from Animal Science Products. Both are formulated to address oxidizers, pH imbalance, and low tonicity.
Vac-Pac product documentation describes a pink indicator, while Vac-Pac Plus includes an intense blue visual indicator to help vaccination crews recognize and monitor treated water.
Learn more about Vac-Pac Plus® vaccine stabilizer .
When should Vac-Pac® be added to drinking water?
Vac-Pac® is used during drinking-water preparation before the live vaccine is introduced. Follow the current Vac-Pac product label, the vaccine manufacturer's instructions, and the applicable vaccination protocol for mixing and administration.
Where can I find research and technical information about Vac-Pac®?
Animal Science Products provides product specifications and technical publications covering drinking-water vaccine stabilization, water-quality management, and live vaccine stability research.
These documents are available in the Technical Resources & Supporting Research section above.
Questions About Vac-Pac®?
Learn more about Vac-Pac applications, technical research, and product information for hatchery vaccination programs.
Contact Animal Science Products to discuss Vac-Pac with our team using our form below.
Additional Information and Related Articles on Vac-Pac®
SpecSheet | SDS | SpecSheet Spanish For use in drinking water when administering water vaccines to neutralize factors that destroy vaccines. Seventy-Five 4 oz. packages per reusable container.
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