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Follow-Up Info for Span Tabs

Waterbaths/Incubators/ Span Tabs

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#1 BradCallen



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Posted 06 May 2013 - 09:45 AM

Good Morning,

My name is Brad Callen and I represent the company of CR CALLEN LLC. I have received a request to update one of our most popular products. The product’s name is SpanTabs. Span tabs are used in your water bath/incubator environment’s to prevent many forms of algae’s, bacteria’s, and fungi from growing and infecting what you are trying to culture in your test tubes. Span tabs come packaged in bottles of 75 blue tablets. How many tablets you use depends upon the size of the incubator/water bath. As the blue color fades you just drop-in another tablet! This saves you the expense of having to clean your baths out monthly, etc.

CR Callen has sold Span Tabs and our other lab tested cleaning products worldwide in many high tech Cancer Research Centers, the Bio-Tech field, and now we are breaking into the Stem Cell research field.

For those of you who would like more info, product samples, MSDS sheets please contact Brad Callen either by phone, 206.363.7648 or email, crcallen@crcallenllc.com. At the present time our new web site ( crcallenllc.com ) is under construction and should be up and running soon. Please feel free to visit our old web site at crcallen.com I have posted below a info sheet that presents more information for using Span Tabs in your research environments..

Thank You
Brad Callen


SPAN TABS: Algaecidal Fungicidal- To be used in water/incubation baths. Use 1 Tablet per gallon of water. Do not use medicinally
Please contact for product uses, MSDS data sheets and all other questions as to how to request product samples.


Minimum inhibitory concentration (MIC) required to prevent the growth of a variety of microorganisms.



Enterobacter Aerogenes .5

Pseudomonas Aeruginosa .3

Escherichia Coli .5

Klebsiella Pneumoniae .5

Serratia Marcescens 1.0

Alcaligenes Faccalis 4.0

Chromo bacterium Violaceum 2.0

Legionella Pnemophila 200.0

Salmonella Choleraesius .5

Streptococcus Feacalis .5

Bacillus Megatherium .5


Penicillium Roqueforti 10.0

Chaetomium Globosum 5.0


Candida Albicans 2.5

CYANOBACTERIA (4) (Blue Green Algae)

Oscillatoria Prolifera 8.0

Nostoc sp. 8.0

Phormidium Inundatum 8.0

Anabaena sp. 8.0


Chlorella Pyrenoidosa 2.0

Chlorococcum Hypnosporum 2.0

Volvox Carterei 1.0

1. Method- Tests performed using basal salts media inoculated with test organisms and incubated at 37’ C for 18 to 20 hrs. at ph. of 7.0

2 & 3. Method- Tests performed using mineral salts solution inoculated with a suspension of test fungi at ph. of 4.5 for 14 days

4 & 5. Method- Tests performed using modified Bristol’s solution inoculated with test organisms. Samples were incubated at 28’ C under 250 intensity light for 8 hour/day for 28 days

CONTACT: CR Callen LLC 206.363.7648 Web: crcallenllc.com Email: crcallen@crcallenllc.com ask for Brad Callen

Attached Files

Edited by BradCallen, 06 May 2013 - 10:02 AM.

#2 Enoch Oblitey

Enoch Oblitey


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Posted 17 June 2013 - 12:34 PM

I am glad to know about Span Tabs for water baths, which control contamination in long running water baths. I for now am in the products and vendors section, and sell Laboratory products online. I shall be very pleased to introduce this Span Tabs product in my line of products. Thanks.

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