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http://indianaquariumhobbyist.com/community/ :: View topic - Glutaraldehyde as a Co2 source?
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Glutaraldehyde as a Co2 source?
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retro_gk
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PostPosted: Thu Mar 23, 2006 4:17 am Post subject:  Reply with quote

 5  ppm  is  0.0005%  
 
 That's  a  helluva  large  dilution  from  50  or  even  25%.  And  a  kitchen  chimney  is  a  very  poor  substitute  for  a  fume  hood.  Please  don't  try  this  at  home.
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Madan
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PostPosted: Thu Mar 23, 2006 4:23 am Post subject:  Reply with quote

                                                   
arupch  wrote:                
but  seachem  uses  it  commercially.  and  seachem  excel  is  used  extensively  abroad.  so  if  we  can  know  the  actual  concentration  of  glutaraldehyde  in  seachem  excel  -  we  may  give  it  a  try.  
 If  anybody  can  send  me  10  -15  ml  of  seachem  excel  I  may  try  to  find  out  actual  concentration  of  glutaraldehyde  in  it.                

 
 PM  me  your  address.
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Madan
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PostPosted: Thu Mar 23, 2006 6:21 am Post subject:  Reply with quote

                                                   
ravi  wrote:                
Hi  Madan,
 
 Please  see  this  link.  http://www.iaglr.org/scipolicy/ais/ais_iaglr02.pdf  page  12/22.  Will  be  of  interest  to  tankers  chief  engineers  !  Very Happy  
 
 Gluteraldehyde  seems  to  be  a  biocide.  I  wonder  what  effect  it  will  have  on  aquarium  microbes.                

 
 Ravi  don't  remind  me.......
 I  have  Ballast  water  management  pouring  out  of  my  ears  now.  Very Happy
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Madan
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PostPosted: Thu Mar 23, 2006 8:45 am Post subject:  Reply with quote

 Arup,  what  is  the  smallest  packaging  size  for  Glutraldehyde  25%  and  50%  concentration  solution/mixture/whatever.
 
 Can  you  please  let  me  know,  I  would  also  like  to  know  the  Manufacturer  and  price  if  available.
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ravi
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PostPosted: Thu Mar 23, 2006 12:19 pm Post subject:  Reply with quote

 Hi  Madan,
 
 Glutataldehyde  soln.25%   Rs.  405.00  per  500ml.  (For  Synthesis)  Make:  SDS  FINE  CHEM
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gopiqpp
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PostPosted: Thu Mar 23, 2006 1:08 pm Post subject:  Reply with quote

 OK,  since  you  gentlemen  seem  determined  to  proceed  with  acquiring  and  processing  glutaraldehyde  please  read  this  info  so  you  will  be  fully  aware  of  the  immediate  as  well  as  delayed  toxic  effects  of  this  chemical,especially  as  you  will  be  using  it  in  a  domestic  setup,as  opposed  to  a  controlled  setup  like  a  laboratory.
 
 http://www.ccohs.ca/oshanswers/chemicals/chem_profiles/glutaraldehyde/health_glu.html
 
 All  the  best  Smile
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Madan
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PostPosted: Thu Mar 23, 2006 1:45 pm Post subject:  Reply with quote

 Gopi,  I  am  still  in  the  "wondering"  about  using  it  stage.
 You  are  not  letting  me  get  past.  Very Happy  
 
 Ravi  Rs.  405/-  for  500  ml  ?????  of  25%  Glutraldehyde,  I  paid  more  than  that  for  500  ml  of  Excel.  With  retro's  maths  I'll  get  a  lifetime's  supply.
 
 Gopi,  what's  still  keeping  me  in  the  "wondering"  stage  is  my  failure  so  far  to  create  a  nano  planted  tank.  Excel  helped  me  along  for  a  while..........,  but  then  lack  of  availability  and  the  price  has  been  a  damper.
 
 Thanks  for  the  details,  after  effects,  and  other  info.....,  have  to  be  absolutely  sure  of  everything  before  pottering  around  with  the  scary  Glutraldehyde.
 
 For  all  you  know  I'll  forever  remain  "wondering".  Very Happy
 
 I  also  pay  heed  to  the  Doctor.  Very Happy
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gopiqpp
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PostPosted: Thu Mar 23, 2006 1:58 pm Post subject:  Reply with quote

 Yea,  Madan,  I  am  a  firm  believer  in  the  adage  that  "  Prevention  is  better  than  cure".  You  should  see  the  shell  shocked  look  on  some  of  my  patients'  faces  after  I've  lectured  to  them  on  the  evils  of  smoking.  Very Happy  
 
 And  you  know  the  other  saying  that"  Doctors  dont  practice  what  they  preach"  ?  That  is  true  too  'cos  I  blithely  use  chloroform  to  make  my  acrylic  tanks  with  just  some  basic  precautions  like  cross  ventilation  and  a  surgical  mask.  Thumb Up
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murthy
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PostPosted: Thu Mar 23, 2006 2:28 pm Post subject:  Reply with quote

 Glutaraldehyde  was  routinely  used  for  sterilising(disinfecting)  surgical  instruments...but  now  rarely  used  bcos  of  its  potential  carcinogenic  effects.
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arupch
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PostPosted: Thu Mar 23, 2006 11:18 pm Post subject:  Reply with quote

 Confused  
 
 if  the  conc  in  excel  is    5  ppm  then  man  you  get  a  lifetime  supply  of  Co2  almost  for  nothing.  regarding  the  other  effects  it  seems  to  me  that  the  conc  used  in  excel  must  be  such  that  this  would  not  have  serious  side  effects  -  after  all  people  abroad  dont  handle  it  under  fume  hood!  also  we  all  know  that  laws  concerning  public  health  /safety  are  much  more  strict  there  than  here  in  india.  so  if  seachem  can  market  that  product  for  years  without  any  problem  (no  lawsuit!!)  then  it  seems  to  me  that  we  should  give  it  a  try.  
 
 regarding  biocidal  effect  -  seachem  does  claims  that  excel  is  mildly  algaecide.
 
 
 i  am  a  bit  experimental  in  nature  may  be  because  i'm  PG  in  chemistry  and  once  i  was  a  chemist!  Smile  
 
 @gopi  and  murthy    
 what  is  the  conc  of  glutaraldehyde  that  is  used  for  sterilisation  of  instruments?
 
 the  main  problem  is  to  find  out  the  suitable  conc.  for  aquarium  use.
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retro_gk
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PostPosted: Fri Mar 24, 2006 1:02 am Post subject:  Reply with quote

                                                   
arupch  wrote:                
Confused  
 
 if  the  conc  in  excel  is    5  ppm  then  man  you  get  a  lifetime  supply  of  Co2  almost  for  nothing.  regarding  the  other  effects  it  seems  to  me  that  the  conc  used  in  excel  must  be  such  that  this  would  not  have  serious  side  effects  -  after  all  people  abroad  dont  handle  it  under  fume  hood!  also  we  all  know  that  laws  concerning  public  health  /safety  are  much  more  strict  there  than  here  in  india.  so  if  seachem  can  market  that  product  for  years  without  any  problem  (no  lawsuit!!)  then  it  seems  to  me  that  we  should  give  it  a  try.  
 
                 

 
 You  seem  to  have  misunderstood  my  posts...  glutaraldehyde  is  considered  harmless  at  concentrations  below  5ppm,  which  is,  in  all  likelyhood,  the  conc  in  excel.
 
 The  problem  arises  when  you  start  with  glutaraldehyde  at  higher  concentrations  to  formulate  your  DIY  excel.  I  can  assure  you  that  no-one  at  Seachem's  labs  handle  stock  glutaraldehyde  out  in  the  open.
 
 BTW,  why  are  you  keen  on  fabricating  your  own  mix??  Yeast  drive  CO2  is  fine  for  aquarium  applications.
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murthy
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PostPosted: Fri Mar 24, 2006 1:08 am Post subject:  Reply with quote

                                                   
arupch  wrote:                
Confused  
 
 
 @gopi  and  murthy    
 what  is  the  conc  of  glutaraldehyde  that  is  used  for  sterilisation  of  instruments?
 
 the  main  problem  is  to  find  out  the  suitable  conc.  for  aquarium  use.                

 
 2%  ?  or  was  it  0.2%  i  cant  recall,need  to  refer  to  my  old  text  book.Its  out  of  use.I'll  post  as  soon  as  I  find  it.
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gopiqpp
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PostPosted: Fri Mar 24, 2006 2:16 am Post subject:  Reply with quote

 Arup  and  Murthy,  Cidex  comes  in  two  strengths  depending  on  the  type  of  instrument  it  is  being  used  for,  and  the  period  of  sterilization  required.  CIDEX  14-day  solution  contains  2.4%glutaraldehyde  and  CIDEX  28-day  solution  contains  3.2%.It  comes  with  a  seperate  activator  which  is  added  just  before  use.
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Madan
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PostPosted: Fri Mar 24, 2006 8:33 am Post subject:  Reply with quote

 Arup  the  Flourish  Excel  sample  you  wanted  is  on  the  way.
 
 Let  us  know  the  results.
 
 Anything  to  crack  the  code!  Thumb Up
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PostPosted: Fri Mar 24, 2006 8:40 am Post subject:  Reply with quote

                                                   
gopiqpp  wrote:                
Arup  and  Murthy,  Cidex  comes  in  two  strengths  depending  on  the  type  of  instrument  it  is  being  used  for,  and  the  period  of  sterilization  required.  CIDEX  14-day  solution  contains  2.4%glutaraldehyde  and  CIDEX  28-day  solution  contains  3.2%.It  comes  with  a  seperate  activator  which  is  added  just  before  use.                

 
 Ow  Ow  ...  wait  a  minute.....
 What  I  garner  from  the  above  is  Glutraldehyde  is  somehow  neutralised  over  a  period  of  time.....  right?  It's  effects  diminish  or  it  disassociates  or  some  such  thing.
 
 So  the  catch  in  Flourish  Excel  must  be  an  inhibitor/or  some  such  thing  which  allows  long  term  storage  at  miniscule  concentration  levels.  Surprised  
 
 Arup....  plenty  more  chemistry  than  we  started  with.
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