Bottle Top Dispenser 0.5-100 mL, Autoclavable 121°C Reagent Dispenser with Volume Lock

The Master Science Bottle Top Dispenser with Volume Lock screws straight onto a reagent bottle and delivers set volumes without pouring or pipetting. It covers five ranges between 0.5 mL and 100 mL, so the same style of dispenser can serve small aliquots and larger repeat additions.

The volume is set on a clear scale and locked in place, which stops it drifting during a run. A reagent recovery function sends liquid back to the bottle and keeps the nozzle from dripping when the unit is idle. Wetted parts use inert materials with a glass/PTFE piston, and the whole dispenser can be autoclaved at 121°C.

Technical Specifications

Accuracy and precision of the Master Science Bottle Top Dispenser with Volume Lock by volume range:

• Brand: Master Science
• Model Number: MSDISP-PROSWISS
• SKU: MSDISP-PROSWISS
• Brand: Master Science
• Model: MSDISP-PROSWISS
• SKU: MSDISP-PROSWISS
• Volume ranges: 0.5-5 mL, 1-10 mL, 2.5-25 mL, 5-50 mL, 10-100 mL
• Graduation: 0.1 / 0.2 / 0.5 / 1.0 / 2.0 mL (by range)
• Systematic error: ±0.5% (±25 / ±50 / ±125 / ±250 / ±500 µL)
• Random error: ±0.2% (±10 / ±20 / ±50 / ±100 / ±200 µL)
• Piston: Glass/PTFE
• Volume setting: Locking mechanism on a clear scale
• Reagent recovery: Yes, reduces waste and prevents dripping
• Aspirating tube: Adjustable for bottle height
• Bottle adapters included: S40, GL32, GL38, GL25, GL28, GL45
• Sterilization: Fully autoclavable at 121°C

Key Benefits

• Volume stays where you set it: The lock on the Master Science Bottle Top Dispenser with Volume Lock prevents accidental changes between dispenses.
• Less wasted reagent: The recovery function returns liquid to the bottle and stops drips at the nozzle.
• Fits most bottles: Six adapters come in the box for the common thread sizes.
• Handles demanding chemicals: Inert wetted materials and a glass/PTFE piston stand up to a wide range of reagents.

For simpler everyday dispensing, see also our bottle top dispenser for routine reagents, a lighter alternative to the Master Science Bottle Top Dispenser with Volume Lock.

Product Features

Dosing

• Five volume ranges from 0.5 mL to 100 mL
• ±0.5% systematic and ±0.2% random error across ranges
• Fast, repeatable volume lock on a clear scale

Bottle fit

• Adapters S40, GL32, GL38, GL25, GL28 and GL45 supplied
• Adjustable aspirating tube for different bottle heights

Care and maintenance

• Glass/PTFE piston and inert materials for chemical compatibility
• Simple to take apart and clean
• Fully autoclavable at 121°C

Applications

The Master Science Bottle Top Dispenser with Volume Lock is a good fit for repeat reagent additions such as:

• Dispensing acids, bases and solvents in analytical labs
• Adding buffers and media in microbiology and cell culture
• Titration and sample preparation in QC labs
• Preparing extraction solvents in food and environmental testing
• Teaching laboratories where pouring is a safety concern

Standard Accessories Included

• Bottle top dispenser (chosen volume range)
• Adjustable aspirating tube
• Bottle adapters: S40, GL32, GL38, GL25, GL28, GL45

Optional Accessories

• Brown reagent bottle, 1 L

Common Dispensing Problems the Master Science Bottle Top Dispenser with Volume Lock Solves

Pouring and measuring cylinders lead to the same issues again and again. The Master Science Bottle Top Dispenser with Volume Lock tackles them:

• Inconsistent volumes: Locked volume settings give the same dose every stroke.
• Splashes and spills: Dispensing straight from the bottle avoids open pouring of hazardous liquids.
• Dripping and lost reagent: Reagent recovery returns liquid to the bottle and keeps the tip dry.
• Bottles that do not fit: Six included adapters cover most common reagent bottle threads.