Using Lavaquick

[digiconvert]

I,m using washaid (lavaquick) for the first time and despite giving a very good rinse after use I get a brown deposit/haze on the print after drying (kentmere FB paper) which becomes really unsightly if I then try to selenium tone.

Any ideas as to the cause ?

Cheers CJB

 

[dancqu]

...despite giving a very good rinse after use I get a brown
deposit/haze on the print after drying ...
Any ideas as to the cause ?
Cheers CJB

A very good rinse? Is that all? How about a
very good wash? Dan

 

[Dave Miller]

Can't help since I've never used it. I assume you are using it after the use of a acid fix in order to reduce you washing time. If that is the case I suggest you consider using an alkline fixer since this is reputed not to need long wash times to remove it.

 

[digiconvert]

A very good rinse? Is that all? How about a
very good wash? Dan

You say potato I say Potatoe

10' under a running tap .

 

[dancqu]

...get a brown deposit/haze on the print after drying...
Any ideas as to the cause ? Cheers CJB

Some will say stain but I say fog. You'll have to back
up on your procedures to isolate the problem. What's
in that HCA and who's turning it out. Never heard of
it. A little sodium sulfite or sodium carbonate are
easy Home-Brew solutions.

Ten minutes is a very short wash and that for very
well processed prints. Dan

 

[JBrunner]

I,m using washaid (lavaquick) for the first time and despite giving a very good rinse after use I get a brown deposit/haze on the print after drying (kentmere FB paper) which becomes really unsightly if I then try to selenium tone.

Any ideas as to the cause ?

Cheers CJB

I would suggest running a print without the washaid to isolate it as the culprit, and continue from there.

 

[loman]

I've used lavaquick almost exclusively for the past two years.
Never ever had a problem with it.
It's great stuff.
By the way it's made by Tetenal.
Best Regards
Mads Hartmann

 

[Tom Hoskinson]

You say potato I say Potatoe

10' under a running tap .

The problem could easily be with your wash water or with your fixing and washing procedure (as others suggest later in this thread).

The Lavaquick MSDS lists the Lavaquick main ingredients as:

Potassium Sulfite
Potassium Carbonate
(EDTA) Ethylene Diamine tetraacetic acid, tetra sodium salt (a chelating - water conditioning agent)

In other words, Lavaquick is a garden variety wash aid. It should not stain your prints unless it (or your water) is contaminated with a staining agent.

Try fixing your prints in 2 baths of fresh fixer followed by washing in several complete water changes - forget the Lavaquick.

If your prints are still stained or fogged - check the paper for fogging and your developer for contamination.

 

[digiconvert]

Thanks for the suggestions. I was surprised that this wash aid was so little known but it's a European product and may have no distributor on t'other side of Atlantic.

Any hows. I have been tried variations on my process and with different wash cycles I have got a decentish print of an FB paper much quicker than my previous process (longer and longer soaks in fresh water worked for me) . Still not happy with Se tones but that's something else to work on. What I like about this hobby is trying new stuff, I'll probably not use a wash aid once this bottle's gone but I've tried it

Cheers CJB

 

[dancqu]

The Lavaquick MSDS lists the Lavaquick main ingredients as:
Potassium Sulfite
Potassium Carbonate;

Potassium takes it out of a lot of gardens. It MAY
be the problem. Although B. Troop has overstated
the miss-match twixt potassium and fixer another
authority on the subject warns of the mis-match.
Although not spelled out, some and likely most
salts of the silver thiosulfate complex are
little to entirely insoluble.

To reduce the interaction twixt the fix and hca
the print should receive a thorough rinse prior
to the hca bath.

BTW, that is the reason I recommend a distilled
water rinse for film immediately following the
fixer. By so doing suspect tap water will
not be forming precipitates within
the emulsion. Dan