Home - homepage of Dr. Dietmar Glindemann

Home(English)     Business products:
-Glindemann PTFE Sealing Rings
-Gastight Allglas-Syringes with
   
Academics - Scientific Publications Dietmar Glindemann
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Last Update April 26, 2014        WEBCounter by GOWEB People visited this site
Internet domains of Dr. Dietmar GLINDEMANN: www.glindemann.net www.phosphine.net,   www.taperjoints.eu

       

Worldwide customers: Glindemann PTFE Sealing Rings
are sold in 200 countries by Sigma-Aldrich. Search Sigma-Aldrich web-shop for "glindemann" or enter Sigma-Aldrich catalogue number.

Please contact Dr. Glindemann at dglinde@aol.com if you experience ordering problems.

Greaseless high-vacuum seal for conical glass joints.

Technical Publication 1 (Fusion).
Technical Publication 2 (Flyer)

For sale are PTFE-sealing rings, 50 rings per package.

 
Glindemann Gastight Allglas-Syringes with PTFE-Sealing ring (and similar piston-pipettes)
are sold by Dr. Dietmar Glindemann

Please contact Dr. Glindemann at dglinde@aol.com for sizes and a quotation.


For hermetic handling of chemicals and environmental samples, syringe pump operation and cold storage.

For sale are improved allglass-syringes with an additional PTFE sealing ring in an additional groove.
Contact:
Dr. Dietmar GLINDEMANN
Goettinger Bogen 15
D-06126 Halle
Germany
 
ph  +49-(0)345-6879948,
fx +49-(0)345-6871333.
E-mail
dglinde@aol.com,
Internet :
www.glindemann.net

 

 

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Short description of  the Sealing-Ring-Business  of Dietmar GLINDEMANN (efficient and economical PTFE Sealing Ring for conical glass joints)
Laboratory work with chemical glass equipment and containers often demands hermetic and clean sealing of conical joints and stoppers. Joint grease is not solvent resistant and not clean. The known PTFE-joint sleeves and stoppers are expensive and not very tight. Therefore, a fine PTFE-ring seal on ground tapered glass joints has been developed. The ring is inexpensive, gas-tight, solvent-tight, chemically inert, temperature resistant and prevents freezing of joints. Estimated 1.5 million seals have been tested on the market in the last years.
Production: Dietmar Glindemann.
Distribution:
To see a list of distributors of GLINDEMANN® sealing rings and their catalogue numbers click on the "Business" part of this site.
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Short description of  the academic scientific work of Dietmar GLINDEMANN

Physicochemistry (separation, distillation, chromatography)
Trace analysis of volatile toxins, odorants containing heteroelements (sulfides, phosphine, organophosphines and other organoelement compounds)
Advanced gas chromatographic trapping techniques
GC-ICP interface construction
Odor research - chemical analysis of odorants, odor measurement by olfactometry, odor evaluation
DMSO (dimethyl sulfoxide) waste residues, DMSO reduction to dimethyl sulfide (DMS) and sewage plant odor


Learn why metals smell metallic...          Link to the paper "The Two Odors of Iron..."
 Artwork: D. Glindemann / Angew. Chem.

(click to enlarge)



About www.phosphine.net

Applying a new developed gas chromatographic trace analytical technique we got extensive knowledge concerning the existence and formation mechanisms of phosphine in the earth’s environment. We discovered phosphine in waste gas, marsh gas, biogas, landfill gas, wetland sediment, soil, intestinal tract of mammals, faecal sludge, animal manure, landfill, technical metals, industrial waste, stone minerals, food and cosmic fall down. It was also found to be a global trace component of the earth’s atmosphere. Do not confuse phosphine (PH3) with phosgene (COCl2, Carbonoxidechloride, Carbonyldichloride, Carbonicaciddichloride).
Diphosphine (P2H4 , Diphosphane) a self igniting gas, was found in fermentation experiments using human feacal bacteria.
(Publication: Gassmann, G., Glindemann, D.: Phosphane in the Biosphere. Angew.Chem.Intern.Edit. 32 (1993) 761-763.). The results of this publication, phosphine and diphosphine, was discussed in various printed media (John Emsley) and TV media (US discovery channel...) as the igniter of methane gas in human flatus gas (to produce spontaneous human combustion (SHC), an appropriate term for this would be "ignis flatus") and in marsh gas (to form swamp lights named as Will o' the Wisp or "ignis fatuus". A biochemical pathway of how microorganisms could produce enzymes to reduce phosphate to phosphine is still not discovered.
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Interesting Chemistry links

Periodic Table of the Elements Links to property data & history of the first 112 elements.
Where to find MSDS (material safety data sheets)
Rob Toreki's Organometallic Hyper Text Book
Applied Organometallic ChemistryInstruction to Authors ISSN: 0268-2605
Organometallics Instructions for Authors and Editors
The Journal of Organic Chemistry, Instructions for Authors and Editors
www.phosphine.com Homepage of Stephen J Pratt
 
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Glassblower Societies worldwide links

American Scientific Glassblowers Society
British Society of Scientific Glassblowers  
Belgische en Nederlandse Vereniging voor Glastechniek
German Scientific Glassblowers Society,   Verband Deutscher Glasbläser e.V  
Indian Society of Scientific Glass Blowers ( ISSG), Email issg_chennai@sify.com
Scientific Glassblowers Association of Australia and New Zealand
Scottish section of British Glass Society
Scottish Glass Society
Vereinigung Österreichischer Glasbläser
 
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Keywords:
Glass ground conical taper standard joint PTFE sealing ring seal, gasket, socket, sleeve, stopper, plug, leakage, vacuum, pressure, grease, jamming freezing
Phosphine (CAS. 7803-51-2, PH3, Phosphane),  Diphosphine (P2H4 , Diphosphane) toxic, environment, marsh gas, biogas, landfill gas, wetland sediment, air, food, diphosphine spontaneous human combustion (SHC),  will o' the wisp, jack o' lantern,  Phosgene

organometallic, methyl mercury, dimethyl mercury (CAS 62-38-4, 593-74-8.), Organotin, tetramethyl tin (CAS 594-27-4),   trimethyl tin (CAS 1066-45-1), Tributyltin chloride ( CAS 1461-22-9), octyl  tin, phenyl tin, Tetraethyl lead (CAS 78-00-2),  Tetramethyl lead (CAS 75-74-1)