Dave Roberts (5)

Dave Roberts is in charge of the chemical storeroom at DePauw University, where Max and I installed the prototype of our line of museum periodic table displays in October 2003. He's such a nice guy that when he noticed our interest in elements, he found a whole cabinet of surplus elements he felt DePauw could live without. Some of them are in my collection now, most will go into future periodic table displays we create for other universities, museums, and science centers.

Click any element tile below to get the full entry for that element, or click on the sample picture to go directly to the description of that sample.

Text and images Copyright (c) 2010 by Theodore W. Gray.
Phosphorus
Phosphorus Red Phosphorus powder ampouled under argon

Red Phosphorus powder ampouled under argon.
Source: Dave Roberts
Contributor: Dave Roberts
Acquired: 1 November, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 0.8"
Purity: 99.999%
Sample Group: Powders
Arsenic
Arsenic Beautiful crunchies
3D3D
Beautiful crunchies.
Source: Dave Roberts
Contributor: daverobers
Acquired: 1 November, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 0.4"
Purity: 99.9%
Mercury
Mercury Nearly full flask
3D3D
Nearly full flask.
Source: Dave Roberts
Contributor: daverobers
Acquired: 1 November, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 12"
Purity: 99.9%
Mercury
Mercury Poster sample

Poster sample.
Source: Dave Roberts
Contributor: daverobers
Acquired: 1 November, 2003
Text Updated: 4 May, 2007
Price: Donated
Size: 2"
Purity: 99.9%
Bismuth
Bismuth High purity shot

High purity shot.
Source: Dave Roberts
Contributor: daverobers
Acquired: 1 November, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 0.8"
Purity: 99.999%