Wet Bulb Wick Sample Pack, Cotton, WBWSP Sizing and WBLP Lab Packs, Oil Lamp Wicking, Thermometer Testing, Candle Making

Precision manufactured treated cotton tubular wet bulb wick designed for hatchery and HVAC industries to determine aqueous vapor in the atmosphere. Applications include use with sling psychrometric instruments and various thermocouples. Made to slide over a probe or thermometer bulb. Finely braided with high quality 100% cotton yarns that slide smoothly over thermometer bulbs or probes. Available in 6 sizes, sized by internal diameter—measure your probe with vernier calipers to determine the correct size. Spool sizes vary. See also the Fluid/Incubator line of wick material for similar applications. Made in the USA.

A sample pack of precision tubular wet bulb wicks in six internal diameters so labs can match a probe before buying a full spool.

• Size a wick against a thermometer bulb using vernier calipers.
• Test fit on a sling psychrometer before committing to a working stock.
• Cover a thermocouple probe for aqueous vapor measurement.
• Evaluate the cotton against existing hatchery or HVAC humidity equipment.

We started as a shoelace factory in Pepperell, Massachusetts, in 1917. More than a century later, that same commitment to quality manufacturing is woven into every product we make. From cord and wicking to beads and craft kits, we provide the materials and inspiration that help makers turn ideas into something they can proudly say, 'I made this.' Built on tradition, designed for modern creativity. Read the full story →