Alternative Heating & Supplies ProTech 300 Outdoor Boiler Water Treatment - 1 Gallon Nitrite Rust Inhibitor, Corrosion Protection

ProTech 300 is a concentrated nitrite-based boiler water treatment that protects outdoor wood boilers from rust, corrosion, and scale when dosed per manufacturer guidelines.

Designed for use in outdoor and wood-fired boiler systems, ProTech 300 supplies controlled nitrite levels to create a corrosion-inhibiting environment for ferrous metals. One gallon (128 fl oz) treats approximately 300 gallons of make-up water, producing about 1000 ppm nitrite; dosing can be adjusted to reach recommended ranges for adequate to optimal protection. Use alongside regular water testing to maintain the right inhibitor concentration for your system’s materials and operating conditions.

How does ProTech 300 protect my boiler from rust and corrosion?

ProTech 300 introduces nitrite ions that form a protective layer on metal surfaces, slowing electrochemical reactions that cause rust and corrosion. Consistent dosing keeps nitrite levels within a target range to maintain protection without over-treatment.

• Add 1 gallon per 300 gallons of fill water for ~1000 ppm nitrite.
• Maintain 750 ppm (adequate), 1000 ppm (good), or 1500 ppm (great) per system needs.
• Compatible with manufacturer treatment programs when used as directed.

How do I determine the right dose for my outdoor boiler?

Start with the baseline dose—1 gallon per 300 gallons—to reach roughly 1000 ppm nitrite, then fine-tune based on test results and your boiler manufacturer’s recommended level. Regular water testing informs whether you need to add more inhibitor or simply top off to account for make-up water.

• Test boiler water using a nitrite test kit to read current ppm.
• Adjust doses incrementally to reach the manufacturer’s specified nitrite concentration.
• Account for system capacity and frequency of make-up water additions.

Can ProTech 300 prevent scale and improve heat-transfer efficiency?

ProTech 300 helps reduce conditions that accelerate scale formation by stabilizing the chemistry of the boiler water, which supports more consistent heat transfer. It is intended as part of an overall maintenance program that includes monitoring and physical cleaning when necessary.

• Reduces corrosion byproducts that can contribute to deposit buildup.
• Works best combined with periodic flushing and mechanical cleaning.
• Regular testing ensures chemical balance to support efficient heat exchange.

How should I store and handle this treatment product safely?

Store ProTech 300 in its original, tightly closed container in a cool, dry place away from direct sunlight and out of reach of children and pets. Follow label directions and wear appropriate protective gloves and eyewear when measuring or pouring to avoid skin and eye contact.

• Keep container upright and sealed to prevent spills and contamination.
• Use chemical-resistant gloves and eye protection during handling.
• Dispose of empty containers per local regulations; do not reuse container for food or drink.

Who is this for? ProTech 300 is intended for outdoor boiler owners, wood-fired system operators, and service technicians who follow manufacturer treatment programs and want to reduce rust, corrosion, and scale risks. It’s suitable for anyone who regularly tests boiler water and can dose treatment accurately by system volume—particularly those maintaining older steel boilers or systems that require nitrite-based corrosion control.