Add Prime to get Fast, Free delivery
Amazon prime logo
$13.25
Get Fast, Free Shipping with Amazon Prime
FREE delivery Tuesday, January 7 on orders shipped by Amazon over $35
In Stock
$$13.25 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$13.25
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon.com
Amazon.com
Ships from
Amazon.com
Sold by
Amazon.com
Amazon.com
Sold by
Amazon.com
Returns
Non-returnable. Transportation of this item is subject to hazardous materials regulation
Non-returnable. Transportation of this item is subject to hazardous materials regulation
This item is non-returnable because of transportation regulation, but if the item arrives damaged or defective, you may request a refund or replacement through Your Orders by providing an image of the item and its defects.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.

Kester83-1000-0951 951 Soldering Flux Pen Low-Solids, No-Clean 10Ml

4.4 4.4 out of 5 stars 381 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice
$13.25
Get Fast, Free Shipping with Amazon Prime
Get a $80 Amazon Gift Card instantly upon approval for the Amazon Store Card. No annual fee.
{"desktop_buybox_group_1":[{"displayPrice":"$13.25","priceAmount":13.25,"currencySymbol":"$","integerValue":"13","decimalSeparator":".","fractionalValue":"25","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"IFBBUbPCW4qLMaDRTX6NBmY8IQ8hKhAbm0liIKMzl1FnPTroYqusBsRuKlHow%2F3q1QDwOdOckMAbUV1RQ60R7%2BA3l0fZhZUd%2Bl24jfWKVGQ5PCX3EI7qhIRAfqbe%2FDgJNgBTfm5QitNmnxWWlzYegg%3D%3D","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

  • For rework and touch-up of smt, smd, and through hole solder joints
  • Suitable for automotive, computer, telecom
  • 10Ml pen applicator with specially designed felt tip
  • Low solids content for practically no residue
  • Compatible with lead and lead-free solders
› See more product details

Frequently bought together

Kester83-1000-0951 951 Soldering Flux Pen Low-Solids, No-Clean 10Ml
This item: Kester83-1000-0951 951 Soldering Flux Pen Low-Solids, No-Clean 10Ml
$13.25
Get it as soon as Tuesday, Jan 7
In Stock
Ships from and sold by Amazon.com.
+
Kester 44 Solder Wire, 63/37 0.031-in, RMA Rosin, 1-ounce Tube
$12.63
Get it as soon as Saturday, Jan 4
Only 9 left in stock - order soon.
Sold by CML Supply and ships from Amazon Fulfillment.
+
Lesnow solder wick braid 10ft Length Desoldering Wick Braid Remover Tool Solder Sucker 1 piece No-Clean soldering Wick Wire R
$7.99
Get it as soon as Friday, Jan 3
In Stock
Sold by Lesnow Direct and ships from Amazon Fulfillment.
Total price: $00
To see our price, add these items to your cart.
Details
Added to Cart
spCSRF_Treatment
Some of these items ship sooner than the others.
Show details Hide details
Choose items to buy together.

Looking for specific info?

Customer reviews

4.4 out of 5 stars
381 global ratings

Review this product

Share your thoughts with other customers
Write a customer review

Customers say

Customers find the flux useful for soldering chips behind chips. They find it a good product for the price and useful. However, some customers have reported issues with the pen tip drying out quickly or not getting wet enough. There are differing opinions on the flow of the flux.

AI-generated from the text of customer reviews

Select to learn more
FunctionalityValue for moneyEase of applicationEase of solderingEase of useFlowBuild qualityTip dryness
32 customers mention "Functionality"27 positive5 negative

Customers like the product's functionality. They say it works well, comes in an easy dispenser, and runs smoothly behind chips on PS3. The flux works well for soldering, but the quality of the pen is poor. Overall, customers are satisfied with the product's performance and consider it a good product.

"We use these a lot for our hand production. They work well and dispense about the right amount of flux...." Read more

"Works as expected. No problems. The flux seems very good quality...." Read more

"This flux does an excellent job. Cleans connections well and runs nice, but this applicator isn't very nice at all...." Read more

"...- one line across your oxidized leads or tracks, and the soldering work like a charm...." Read more

21 customers mention "Value for money"21 positive0 negative

Customers appreciate the product's value for money. They find it useful and a good item at reasonable prices.

"...Kudos to Kester for this great product!" Read more

"ok product" Read more

"...the product, easy to install, apparently not there to complain, Good Product and excellent. would buying follow this kind of accessories." Read more

"This product is great, don't get me wrong, but the PS3 I was attempting to repair was completely fried...." Read more

5 customers mention "Ease of application"5 positive0 negative

Customers find this product easy to use and install. It's a great way to apply flux on PCBs, with no mess and easy control of the amount applied.

"This is a very easy to use way to apply flux. I use it for building and repairing quad copters and it makes soldering a lot easier." Read more

"This is a great way to apply flux on a PCB...." Read more

"Everything good about the product, easy to install, apparently not there to complain, Good Product and excellent...." Read more

"...No mess, and easy to control the amount applied." Read more

5 customers mention "Ease of soldering"5 positive0 negative

Customers find the soldering pen helpful for soldering small items together. It makes the process and clean up faster.

"...I use it for building and repairing quad copters and it makes soldering a lot easier." Read more

"This made the soldering process and clean up so much faster!" Read more

"This is the best flux I've ever used. Makes hand soldering of SMT parts very easy, and leaves very little residue...." Read more

"a must have when doing soldering. i had never used these pens before buying this one. now i use this whenever i solder" Read more

5 customers mention "Ease of use"5 positive0 negative

Customers find the product easy to use. It's a good solution for techs who need to keep excess heat off a trace. They say it makes their lives easier and is convenient for those infrequent small soldering jobs.

"...You'll quickly learn what this stuff can do to make your life WAY easier!" Read more

"Talk about the perfect solution! High quality flux in a felt tip applicator... works like a charm and doesn't waste flux." Read more

"Very handy..." Read more

"a good solution for the tech that needs to keep the excess heat off a trace..." Read more

31 customers mention "Flow"20 positive11 negative

Customers have different experiences with the flux flow. Some find it high-quality and liquid, while others report issues like poor flow, spread apart tip, and runny flux.

"...They work well and dispense about the right amount of flux. The flux stays clear and is hard to see when dry on the PCB...." Read more

"Dispenser pen doesn't flow well until it does...." Read more

"Works as expected. No problems. The flux seems very good quality...." Read more

"...My pen had a recent date code and the flux flows out of it nicely after you press the tip in a few times on something firm...." Read more

11 customers mention "Build quality"0 positive11 negative

Customers are dissatisfied with the product's build quality. They mention it may not be genuine Kester, and the design is poor. The pen doesn't last long and falls apart quickly. The tip is hard and not spongy, making the application useless.

"...Even though the build of the product was faulty." Read more

"...that was a problem, it is the s***ty design/implementation - unbelievably bad." Read more

"It works as advertised, however the tip is hard, not spongy, and if you push too hard the tip breaks into the pen and flux goes everywhere." Read more

"...with this is the head of the pen did not last very long and fell apart very quickly." Read more

10 customers mention "Tip dryness"0 positive10 negative

Customers are unhappy with the tip dryness. They report that it dries out too quickly, the liquid doesn't come out, and the pen part fails to get wet with flux no matter how many times they tap it. There have also been reports of flux leakage onto tubes and labels, and spilling all over their workstation.

"...with the liquid inside the pen and no matter what I do the tip is bone dry...." Read more

"...The actual pen part failed to get wet with flux no matter how many times i tapped it. You can easily pop the top to use the flux inside...." Read more

"The flux is great but dries up too quickly. The pen evaporated if I didn't use it all up after removing the cap." Read more

"...to use it, the flux poured out of the pen...store tip up and the tip drys out. Seller did refund." Read more

Obstructive Labeling
1 out of 5 stars
Obstructive Labeling
I haven't tried the product yet. Generally speaking Kester makes good products. However, whoever placed the label shown in the attached photos needs to rethink where they are placing it. It completely obstructs Kester's markings. My rating is for that person/organization.
Hide
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

  • EFrog
    5.0 out of 5 stars Great product at a good price
    Reviewed in the United States on March 13, 2023
    Verified Purchase
    Are you, like me, a builder? If you work on electronics kits like ham radio equipment sometimes you need flux to complete a join. This will do the job for you.
    73
    Helpful
     Report
  • Robot Power
    5.0 out of 5 stars Works well
    Reviewed in the United States on March 25, 2013
    Verified Purchase
    We use these a lot for our hand production. They work well and dispense about the right amount of flux. The flux stays clear and is hard to see when dry on the PCB.

    You can press down on the tip to get a faster flow. You must be diligent about putting the top back on tightly or it will get dried out. They will last for months after opening if you jam the top back on.

    I like these better than the competitor we've used before (don't remember the brand)
    Helpful
     Report
  • Richard J.
    4.0 out of 5 stars soldering flux
    Reviewed in the United States on October 11, 2024
    Verified Purchase
    thank.
    Helpful
     Report
  • Chris B
    5.0 out of 5 stars First flux pen
    Reviewed in the United States on February 19, 2013
    Verified Purchase
    Works as expected. No problems. The flux seems very good quality. The flux is pretty thin, if you push the tip in for to long it will drip off the tip.
    Helpful
     Report
  • mark lillo
    5.0 out of 5 stars Very handy
    Reviewed in the United States on February 3, 2021
    Verified Purchase
    This is a very easy to use way to apply flux. I use it for building and repairing quad copters and it makes soldering a lot easier.
    Helpful
     Report
  • Miguel I. Fonseca Borrase
    5.0 out of 5 stars A great way to apply flux
    Reviewed in the United States on October 9, 2013
    Verified Purchase
    This is a great way to apply flux on a PCB. Gently press the felt tip of the pen against the surface and it will go inside the shaft producing a tiny pool of flux on the board. You don't have to press hard or stay too long. Then use the felt tip to spread the flux over the points you want it! Kudos to Kester for this great product!
    One person found this helpful
    Helpful
     Report
  • JD
    3.0 out of 5 stars Quality flux pen under 10 bucks
    Reviewed in the United States on August 16, 2020
    Verified Purchase
    Good no clean pen made by a reputable company (Kester). My pen had a recent date code and the flux flows out of it nicely after you press the tip in a few times on something firm. Very satisfied for seven bucks.

    UPDATE: Flux no longer flowing out nicely. Have to really press it hard on something and still doesn't flow heavily like it should be. Good flux, bad pen design or something.
    2 people found this helpful
    Helpful
     Report
  • Tyrone Frazier
    5.0 out of 5 stars Awesome
    Reviewed in the United States on October 7, 2021
    Verified Purchase
    Item I as described arrived on time love to do business agian
    Helpful
     Report
 

Feedback

If you have a question or problem, visit our Help pages.
If you are a seller for this product and want to change product data, click here (you may have to sign in with your seller id).