---
product_id: 61297208
title: "LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA"
brand: "la-co"
price: "73 zł"
currency: PLN
in_stock: false
reviews_count: 9
url: https://www.desertcart.pl/products/61297208-la-co-22194-water-soluble-all-weather-copper-flux-paste
store_origin: PL
region: Poland
---

# Water-soluble, residue-free All-weather, hot & cold use ASTM B813 & NSF-61 certified LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA

**Brand:** la-co
**Price:** 73 zł
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Elevate your solder game with the all-weather, residue-free copper flux! 💧

## Quick Answers

- **What is this?** LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA by la-co
- **How much does it cost?** 73 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/61297208-la-co-22194-water-soluble-all-weather-copper-flux-paste)

## Best For

- la-co enthusiasts

## Why This Product

- Trusted la-co brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lead-Free & Non-Toxic:** Protect your health and environment with a flux paste free from lead, acids, and harmful chemicals.
- • **Clean & Safe Soldering:** Water-soluble formula leaves zero residue, ensuring pristine plumbing joints without corrosion risks.
- • **Effortless Application:** Innovative brush-in-cap design lets you apply precisely and watch the copper brighten instantly—solder like a pro.
- • **All-Climate Reliability:** Engineered to perform flawlessly in both scorching heat and freezing cold, so your projects never pause.
- • **Certified Quality Assurance:** Meets ASTM B813 and NSF-61 standards, guaranteeing top-tier safety and performance for potable water systems.

## Overview

LA-CO 22194 is a 4 oz water-soluble, lead-free copper flux paste designed for plumbing applications. It cleans pipes during application, meets ASTM B813 and NSF-61 standards for potable water safety, and performs reliably in all weather conditions. The brush-in-cap packaging ensures precise, mess-free use, making it a trusted choice for professional and DIY soldering projects.

## Description

Water Soluble Lead Free Flux, Water Soluble Paste, Organic, Working Range Below 800 Deg F, Specific Gravity 1.11, Container Type Jar, Container Size 4 oz BIC, For Joining Copper to Copper and Copper to Brass, Standards NSF-61G, ASTM-B814

Review: It worked - Worked great on my vintage Benjamin air rifle barrel,good as new,great product for sure.
Review: Great flux! Brush in cap! - This product works well! I've been using non stop since I received it! It cleans up well with water after soldering! I like much better than the previous flux which was greasy to clean up! Love the brush in cap! You can see it working as soon as applying! The copper starts to turn bright!

## Features

- Water-soluble paste won’t leave residue in water piping
- Meets industry standard ASTM B813 and contains no zinc chloride to reduce corrosion concerns
- Non-acid, non-toxic, and lead-free to eliminate safety concerns
- Cleans pipe upon application, allowing solder to run more smoothly around the pipe
- All-weather formula for use in hot and cold climates. Meets ANSI/NSF Std. 61 specifications for Potable Water use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002DLU96O |
| Best Sellers Rank | #88,599 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #89 in Soldering Flux |
| Date First Available | May 25, 2017 |
| Department | All Ages |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.3 ounces |
| Item model number | 22194 |
| Manufacturer | La-Co |
| Product Dimensions | 1 x 1 x 1 inches |

## Images

![LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA - Image 1](https://m.media-amazon.com/images/I/415JpvADyaL.jpg)
![LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA - Image 2](https://m.media-amazon.com/images/I/51VbrWE4aBL.jpg)
![LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA - Image 3](https://m.media-amazon.com/images/I/51aTGjiQbjL.jpg)
![LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA - Image 4](https://m.media-amazon.com/images/I/51e2pFnf5wL.jpg)
![LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA - Image 5](https://m.media-amazon.com/images/I/51vkmflGWPL.jpg)

## Questions & Answers

**Q: Since this is water soluble, can it be used on pcb's and electronics? will it corrode over time? it's non-acid.**
A: NO....do not use this on electronics or pcb's as it will corrode with that green corrosion. I have tried it and that is what happens. In a water pipe it is fine as it all washes away naturally.

**Q: I have a ring that snapped and i want to fix it, i can still wear the ring but the part where it snapped pinches the skin. can i use it on jewelry?**
A: This would likely corrode the ring badly. Its removes oxidized layers so solder can stick to the base metal. It's very acidic and corrosive.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It worked
*by M***N on October 20, 2025*

Worked great on my vintage Benjamin air rifle barrel,good as new,great product for sure.

### ⭐⭐⭐⭐⭐ Great flux! Brush in cap!
*by G***I on May 21, 2024*

This product works well! I've been using non stop since I received it! It cleans up well with water after soldering! I like much better than the previous flux which was greasy to clean up! Love the brush in cap! You can see it working as soon as applying! The copper starts to turn bright!

### ⭐⭐⭐⭐⭐ Very good purchase excellent product
*by J***L on October 11, 2025*

Very good purchase excellent product

## Frequently Bought Together

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*