Kiek radau internete, citrinos rūgštis yra saugi skalbiankėse:
O-Ring Materials Compatible with Citric Acid (sandarikliai/gumos suderinami su citrinos rūgštimi):
http://www.efunda.co.....tric Acid#matO-Ring Materials Compatible with Vinegar (sandarikliai/gumos suderinami su actu):
http://www.efunda.co...;SC=Vinegar#matir dar naudingas forumas ta tema
http://ths.gardenweb...1742369440.htmlsusiję citatos iš šios nuorodos:
And, looking at the table of what material o-rings need to be to be safe for vinegar versus citric acid solutions, I note that ALL the common materials (Butyl rubber, silicon, teflon) are rated as OK for both.
The one flop - polyacrylate - is a stellar material to use with solvents. It will never show up in your clothes washers
***
This was taken from the British G2833 (LaPerla) dishwasher manual:
Rinse Aid
Alternatively, it is possible to use
� Household vinegar with a max. 5%
acid content
or
� Liquid citric acid up to 10% acid
content. The resulting rinsing and
drying quality will not, however, be
as good as when rinse aid is used.
Do not use vinegar with a higher
acid content (e.g. vinegar essence
25% acid). This would damage the
dishwasher.
So I guess it's alright to use vinegar in the washer.
***
o čia nors ir paaiškina, kad citrinos rūgštis stirpresnė už acto, gal kuri iš jūsų supras, na, bet nepaneigia kad saugu yra juos naudoti
Citric acid is way stronger than acetic acid, as far as acting "acidly" goes:
It has 3 protons in its structure; therefore it has 3 ionization constants. The first ionization constant
K© = 7.4 x 10^-4.
Acetic acid is a monoprotic acid, which has only one carboxylic group and its ionization constant
K(a) = 1.75 x 10^-5.
Now, the ratio of K© and K(a) shows you:
K© / K(a) = (7.4 x 10^-4) / (1.75 x 10^-5) = 42
Conclusion: Citric acid is 42 stronger than acetic acid.
============
If the Miele guy cares to show how a stronger acid won't do what a weaker acid supposedly does, I'd like to see it.
It would depend on the amount of their cleaner, and how much of each acid is available for reacting with the fittings.
***
Taigi, pagal visą tą informaciją, mano galva, saugu yra abu, ir acto ir citrinos rūgštis, dėl visa ko actą geriau naudoti ne stipresnį kaip 5 proc, citrinos rūgštį-10 proc tirpalą
beje, ką tik mėginau nušveisti kai kurias vietas su citrinos rūgšties tirpalu, nesėkmingai
paskui atkreipiau dėmesį į kvapą tokį įtartinai malonų, pasirodo, ne tą pakelį pasiėmiau
tai galiu teigti, kad vanilinis cukrus
netinka
tik neleidžia naujoms susidaryt. savaitgalį šveičiau tą būgną su kietu šepečiu, beveik nubrūžinau. o dabar atsiuntė iš Anglijos tokius "stebuklus". bandysiu juos panaudot 
, kai pradejo gabalais luptis kazkokios apnasos, uzsikiso skalbianka, galvojau kad sugedo, bet pavyko prapust. Reiks dar tetos kada paprasyt kad parsiustu, nes tikrai veiksmingas dalykas
