Finding the best flux kit suitable for your needs isnt easy. With hundreds of choices can distract you. Knowing whats bad and whats good can be something of a minefield. In this article, weve done the hard work for you.

Best flux kit

Product	Features	Editor's score	Go to site
	Alpha Fry AM53982 Cookson Elect Lead-Free Silver Solder and Flux Kit		Go to amazon.com
	Oatey 29025 Safe-Flo Wire Solder, 1 Lb Bulk, Solid, Gray, Silver		Go to amazon.com
	Oatey 50684 Safe-Flo Silver Plumbing Kit, 8 oz		Go to amazon.com
	Oatay Plumbing Solder Kit, 1/4 lb solder and 1.7 oz flux		Go to amazon.com
	Bernzomatic Solder and Flux Kit		Go to amazon.com
	Alpha Fry AM53949 Cookson Elect Plumber's Solder Kit		Go to amazon.com
	JacobsParts Professional Solder Assist Tools and Accessory Kit (11 Piece)		Go to amazon.com
	BernzOmatic SSWS300PK All in One Plumbing Solder Kit		Go to amazon.com
	Alpha Fry AM33945 Cookson Elect Flow-Temp Lead-Free Plumbing Solder		Go to amazon.com
	AMTECH NC-559-V2-TF Solder Flux - 30cc Dispensing Kit Including Plunger and Tip		Go to amazon.com

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1. Alpha Fry AM53982 Cookson Elect Lead-Free Silver Solder and Flux Kit

Feature

The product is .75OZ .062 Spec Solder
Easy to use
The product is manufactured in China
For joining silver, nickel, and copper alloys
Non-electrical applications
98-percent tin and 2-percent silver
450 Degree F melting point
0.062 Diameter

Description

The product is .75OZ .062 Spec Solder. Easy to use. The product is manufactured in China.

2. Oatey 29025 Safe-Flo Wire Solder, 1 Lb Bulk, Solid, Gray, Silver

Feature

Copper, bismuth, tin and Silver alloy
420

Lead free; meets the requirements of the Safe Drinking Water Act.
Wide melting range: 415F - 455F
Use of flux required
Can not be used on aluminum

Description

Alloy of Tin, Copper, Silver, and Bismuth that works much like 50/50 solder. Recommended for use on potable water systems for sweating copper joints. Also effective on stainless steel, brass alloys, chrome alloys, galvanized steel and cast iron piping. Works with any high grade paste or liquid flux and a standard propane torch. Oatey No.95 tinning flux recommended. Provides excellent flow and fill characteristics. 420 to 460 degrees F melting range; 0.117" diameter. Meets ASTM standard B-32 and the requirements of Safe Drinking Water Act. Can Not Be Used On Aluminum.

3. Oatey 50684 Safe-Flo Silver Plumbing Kit, 8 oz

Feature

Copper, bismuth, tin and silver alloy.
420

F - 460
F melting range.
Meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act.
Formulated for plumbing/potable water line applications.
Copper, bismuth, tin and silver alloy
420F - 460F melting range
Meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act
Formulated for plumbing/potable water line applications
Lead free solder

Description

Oatey products can be found in residential and commercial applications and have achieved excellent brand name recognition with consumers. All products are backed with the highest quality technical and customer support programs in the industry.

4. Oatay Plumbing Solder Kit, 1/4 lb solder and 1.7 oz flux

Feature

Copper, bismuth, tin and silver alloy.
420

F - 460
F melting range.
Meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act.
Formulated for plumbing/potable water line applications.

Description

Oatey Safe Flo Silver Lead Free Plumbing Solder is recommended for use on potable water systems for sweating joints in a copper water distribution system. Safe Flo Silver Lead Free Solder is also effective on stainless steel, brass alloys, chrome alloys, galvanized steel and cast iron piping. Safe-Flo Solder complies with CA & VT lead content regulations. Highlights: Size : 8 Oz IAPMO Listed solder and water soluble flux NSF-61. Flux meets ASTM B-813 standard and is City of L.A. approved. Kit contains: 1/4 lbs, 0.117" gauge silver lead free solder, 1.7 Oz. H-20-5 water soluble flux, an applicator brush and a sand cloth. Meets ASTM Standard B-32 and the requirements of the Safe Drinking Water Act. Formulated for plumbing/potable water line applications. Carded. Physical/Chemical Properties: Alloy composition: Tin, Copper, Bismuth, Silver Appearance: Silver Solid Wire Melting Range: 420 F to 460 F Common Applications: Oatey Safe Flo Silver Lead Free Plumbing Solder is recommended for use on potable water systems for sweating joints in a copper water distribution system.

5. Bernzomatic Solder and Flux Kit

Feature

Kit includes: 4 oz. Lead-free Silver bearing solid wire solder, 1.7 oz. Lead-free water soluble plumbing flux, abrasive cloth for surface preparation, flux brush
Melting temperature of 430 F/ 221.1 C
Lead-free solder and flux, NSF 61 certified safe for potable water systems
Perfect for creating water-tight seals in copper pipes and hot water heaters, and for general plumbing repairs
Diameter of .118 in. (3 mm)

Description

Kit includes: 4 oz. Lead-free Silver bearing solid wire solder, 1.7 oz. Lead-free water soluble plumbing flux, abrasive cloth for surface preparation, flux brush. Melting temperature of 430 F/ 221.1 C. Lead-free solder and flux, NSF 61 certified safe for potable water systems. Perfect for creating water-tight seals in copper pipes and hot water heaters, and for general plumbing repairs. Diameter of .118 in. (3 mm).

6. Alpha Fry AM53949 Cookson Elect Plumber's Solder Kit

Feature

The product is Lead Free Solder Kit
Easy to use
The product is manufactured in China
Silver bearing solder with water soluble flux emery cloth and brush
For non-electrical plumbing applications
430 Degree F melting point
1.25-Inch Diameter
ASTM approved

Description

The product is Lead Free Solder Kit. Easy to use. The product is manufactured in China.

7. JacobsParts Professional Solder Assist Tools and Accessory Kit (11 Piece)

Feature

Desoldering Pump Dimensions: 8.5 L x 0.8 IN / 20.75 x 2.5 CM
Solder Composition: 63% Tin 37% Lead
Solder Assist Tools

Description

This soldering kit includes a 6 piece solder assist tool set, a desoldering pump, anti-static ESD tweezers, 12.5g tube of 63/37 leaded solder, desoldering wick, and rosin flux paste. The solder assist tools are made of a heat resistant steel alloy. Use them for scraping and removing debris from the surface of PCB, applying rosin flux paste, repositioning components and truing up new solder joints. The desoldering pump is 8.5" L x 0.8" D.

Package Includes:
Solder Assist Tools (6)
Desoldering Pump
Desoldering Wick
Solder Wire (12.5g)
Rosin Flux Solder Paste (50g)
ESD Tweezers

UPC: 845832013084

8. BernzOmatic SSWS300PK All in One Plumbing Solder Kit

Feature

Kit includes: 3 oz. Lead-free Silver bearing solid wire solder, 1 oz. Lead-free water soluble plumbing flux, 120 grit sand cloth for surface preparation, flux brush
Melting temperature of 430 F/ 221.1 C
Lead-free solder and flux, NSF 61 certified safe for potable water systems
Perfect for creating water-tight seals in copper pipes and hot water heaters, and for general plumbing repairs
Diameter of .062 in. (1.6 mm)

Description

Everything needed for basic plumbing jobs including soldering copper pipes and repairing hot water heaters. Kit includes lead-free solder wire, plumbing flux, flux brush and sand cloth. Solder has a melting temperature of 430 degrees Fahrenheit.

9. Alpha Fry AM33945 Cookson Elect Flow-Temp Lead-Free Plumbing Solder

Feature

The product is 3OZ .125 Plumb Solder
Easy to use
The product is manufactured in China
For general non-electrical applications including copper plumbing and water tanks
430 Degree F melting point
0.125 Diameter
3-Ounce
Carded

Description

The product is 3OZ .125 Plumb Solder. Easy to use. The product is manufactured in China.

10. AMTECH NC-559-V2-TF Solder Flux - 30cc Dispensing Kit Including Plunger and Tip

Feature

Optimal viscosity - 40-52 (Malcom @ 10 RPM/25C (x103mPa/s)). High temperature compatible (up to 300C/600F). Surface insulation resistant. No copper mirror breakthrough. Low electrochemical migration (<1 decade drop). May contain up to 7% w/w of ethoxylated 4-nonylphenol (NPE can be harmful to aquatic organisms - dispose of responsibly avoiding water drains)
Activated residue is clear and non-corrosive - can be left on board for multiple SMT assemblies (manufacturer recommends cleaning all flux residues at all times to avoid board contamination or voltage leakage on circuits with high impedance, also non-activated residue may absorb moisture from the air and subsequently cause corrosion). Wide process window - excellent performance on Flip Chip bumping and Chip Scale Packaging sites.
Syringes are intended for industrial dispensing machines and use a piston stopper instead of a plunger - do not remove the piston as it delivers the best seal to prevent contact with air. Dispensing Kit is a third party add-on, not supplied by AMTECH. A plunger is to push on the piston and not necessary snuggly fitting AMTECH syringe, a plunger can be loose. Dispensing tip gauge (size) will be within 14-23 Ga and may differ from pictured.
Genuine product made in the USA by Inventec Performance Chemicals. Distributed by AMTECH DIRECT - every original shipment will include AMTECH Soldering Profiles card.
ROL0 flux classification - rosin based, low activity no-clean tacky solder flux for professional/industrial use. Highly praised by advanced reworks community for mighty long-lasting action and easy cleaning - clear residue evaporates with hot air and doesn't short components. Applicable for a syringe, stencil printing, rework, BGA sphere attachment and reballing using standard tin/lead alloys (won't solder lead-free metals). Halide-free (<0.05%). Contains UV-tracer for fast detection of splatter.

Description

AMTECH NC-559-V2-TF No-clean Tacky Solder Flux 30cc Dispensing Kit

Conclusion

By our suggestions above, we hope that you can found the best flux kit for you. Please don't forget to share your experience by comment in this post. Thank you!