Cesium-137 kissin' cousin of rubidium-86.. deposition around Chornobyl. I wike NEN Dupont's widdle informational sheet.
well.. I guess it does the job.. sometimes I wish It was more clear about the calibrate time
It gives me Specific Activity (A) say... 7.149514mCi/mg for
today's shipment (calibrate date 10 Jan 01). Oh man.. I gots to gets dat Rb/K/Cotransport data..
the literature search is SOMEWHERE in SOME big pile oopsie.. i fergot.. i don't wike
millicurries much.. i perfer MegaBiquerels, 'cause a Biquerel is a dpm. dat's how the Scintillation counter spits
it out. dis shipment.. 264.53203 MBq/mg funny thing about the reports.. 6 decimal places.. they say there's EXACTLY 10.00000mCi/mL EVERY shipment.. EXACTLY 370.000000MBq/mL EXACTLY 0.100000mL EVERY shipment.. but then the specific activity is quazzy to the 6th decimal place.
oh well.. whatever floats their boat, but.. i don't know.. it just doesn't install super duper confidence.
i always measure it, and i always get like 90-92 m L.. i figger the rest is gone.. but i don't know if
MY pippetteman didn't suck it up.. or it is left in THEIR pipetter.. prolly i should split the
difference.. oh well.. so i add like 208-210 accordingly to get it to 300 m L theoretically..
sometimes the freek has sat around so consarnt.. the half life is only what.. 18.6 days..
so in cases where the cells have been loafing for a couple weeks or more..
the consarnt rubidium is all decayed. i guess i did that just a few months ago. err.. the time before when i got the shipment. so i gots lotus set up to handle this.. the third
'100 m L' is always like 90-92 m L agin.. oh i ferget.. another dilution.. the first two today DID get exactly 100 m L of the rubidium stuff.. also 900 m L more of PBS (that is what i diluted) the original 92 m L with the 208 m L say as well.. so the foyst two 100 m L (i guess i have diluted
different inna past..) git 900 m L.. then the last has 92 m L so it gets maybe 832 m L. but i sort of trip on this one.. lotus spit out 832.32 m L so that is what i shot fer. now this only happens what.. once every two weeks.. then i gots mah data.. an ahm set.. the write-up has
a blank today inna spot where it might say specific activity and what do i do? ionic concentration mg/mL.
okay.. this is the deal. dick can drive u quazzy sometimes. i'm shellshocked. nothing is ever perfect enough.
it never stops.. WHAT IS THE PHILOSOPHICAL MEANING of the scintillation counter??
so consarnt.. u gots to control control control.. there IS NO REALITY without controls.
an aside.. i LOVE MY LEAD BRICKS.. solutions can be viscous.. but lead is DENSE!!! YYEEHHAAAUUGGHHH!!
ahem.. ::cough:: unnggkkk.. yes.. excuse me.. ::kaff::

so anyhows.. i am going to stay inna concrete here.. i am obviously in a concrete mood.
my January 10, 2001 shipment here.. i corrected the 264.53203MBq/mL specific Activity with the 99.9% purity
sheet.. will the hot Cesium contamination be active in the bumetanide (a.k.a. Bumex loop diuretic) sensitive
are these ideas philosophically sound??...
is any of this relevant to significant error?
i always figger that the proper course is to get the precision far beyond, and after the fact truncate and round appropriately. okay.. using the 'PRECISE' value of 370.000000MBq/mL
and the dilutions i ramble about above.. 95.92 m L recovered..
(where'd the freek 4.08???? m L extra go?? ya GOTS ME!!
i assume it is in the aether the heck outs mah 'perment.
like i said..
i added 204.18 m L Phosphate Buffered Saline (PBS) to theoretically get precisely 300 m L
of a solution containing the ENTIRE 37MBq shipment. well.. i assume i was gypped by that mysterious 1.5096MBq amount (4.08???? m L of a 370.000000MBq/mL solution)
so anyway.. yeah.. ahum.. gypped and to the deficient 95.92 m L i added 204.18 m L PBS,
then after vortexing took exactly 100 m L each of that and put it in aliquot storage tubes "A" and "B"
aliquot tube "C" i managed to salvage 92.48 m L, and using the Lotus spreadsheet that gave me the
832.32 m L.. did i say this already? anyway.. THEORETICALLY hence this solution would be the same as
"A" and "B." utilizing physical unit algebra i get 264.79683MBq/mg and 4.4706084 m g/mL, after all those
dilutions.






You can email me with questions:
Hi Kayvey!