Solder Paste Products


Kester Solder Spheres and Tacky Soldering Flux


Packaging Size
Jar 100gms
Syringe 30gms

Kester Ultrapure ® Solder Bar

Made by a special process which control the inclusion of oxides and metallic and non-metallic impurities, Kester Ultrapure ® is the industry standard bar solder for use in high tech electronics applications where lower surface tension and hole filling ability are essential. The purity of Kester Ultrapure ® far exceeds the requirements of QQ-S-571 -F, ASTM B32, and ANSI/J-STD-006.

Kester Solder Wire


Inch Metric Standard Wire Gauge
0.010 0.25mm 30
0.015 0.40mm 28
0.020 0.50mm 25
0.025 0.64mm 23
0.031 0.80mm 21
0.040 1.00mm 19
0.050 1.30mm 18
0.062 1.50mm 16
0.093 2.50mm 13
0.125 3.20mm 10

Kester Flux and Chemicals

The Kester Flux-Pen ® is a unique tool for rework and touch-up soldering. It allows controlled applications of flux, eliminating the mess from flux bottles. The Flux-Pen is ideally suited for surface mount rework, component add-on applications, and TAB assembly operations.


Technical Page

hand soldering