2015 Mills and Grinders Survey Results

In a laboratory, most materials required for sampling are, in practice, nonhomogeneous mixtures. The best method of obtaining a small representative sample of the nonuniform whole is to take a quantity of the material large enough to be compositionally representative and reduce it to a fine homogeneous powder. For this purpose, a laboratory mill or grinder is usually used.

By Trevor Henderson

Top 5 Questions You Should Ask When Buying a Mill or Grinder

  1. Will the mill/grinder be used for wet or dry milling?
  2. For dry milling, ask how finely the material needs to be ground and what are the properties of the material? Rotor beater, disc, and mortar mills, for example, are best for mid-range grinding (final fineness of ~0.01-0.1 mm).
  3. For wet milling, ask what capacity of grinder you will need. Bead mills are usually best for small capacity applications while rotor-stator homogenizers should be considered for larger scale applications. For very large scale applications, industrial-scale mills are probably the best fit.
  4. How important is preventing cross contamination? Bead mills are likely a good choice if you don’t want any risk of contamination.
  5. Based on the materials you will be milling, how long does the mill or grinder typically last? How much do replacement parts cost and how easy are they to get? What level of support/warranties does the company offer?

Types of laboratory mills or grinders used by survey respondents:

Grinding mill 41%
Rotor mill 27%
Ball mill 23%
Mortar grinder 23%
Disc Mill 19%
Jaw crusher 16%
CryoMill 15%
Mixer mill 15%
Cutting mill 12%
Knife mill 11%

Primary purpose of lab mill or grinder as reported by survey respondents:

Research 43%
Processing 26%
Quality control 19%
Clinical and diagnostic 7%
Other 4%

Nearly 43% of respondents are engaged in purchasing a new laboratory mill or grinder. The reasons for these purchases are as follows:

Replacement of an aging system
Addition to existing systems, increase capacity
Setting up a new lab
First time purchase

Top 10 Features/Factors Respondents Look for When Purchasing a Laboratory Mill or Grinder:

Durability of product 80%
Low maintenance - easy to use and clean 70%
Safety features 67%
Results with minimum deviation 66%
Value for price paid 63%
Reliability of vendor 55%
Service and support 54%
Warranty 50%
Energy efficient / low operating cost 45%
Reputation of vendor 39%

For more information on mills and grinders, including useful articles and a list of manufacturers, visit www.labmanager.com/mills-and-grinders

See the most recent survey results

Categories: Surveys

Published In

Safer Science Magazine Issue Cover
Safer Science

Published: June 11, 2015

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