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Andrey Donchev
13-May-2005, 03:20
I'll appreciate any info on Efke's film developer "LAXO" and paper developer "FR-4". I made an extensive search, but didn't found anything substantial! Thank you all for the help! Regards!

Janko Belaj
13-May-2005, 05:44
I have those 3 recepies for efke's FR4, but as I can buy factory sealed developer (ready to be mixed) I have never tested any of those.
FR 4 is caled universal paper developer. It is for old papers and for efke's microfilm.



I have worked with Laxo developer several times, well once long time ago and once agin several years ago and was both times very disapointed. Just read description and time... "fine grain developer" and than 24°C with just few minutes... no it can't be.

<table border="1" cellspacing="0" cellpadding="2">
<tr>
<td colspan="2" align="left" valign="top">

EfKe FR4 (from book "Fotografija", MIlan Fizi, Zagreb 1982)

</td>
</tr>
<tr>
<td align="left" valign="top">Metol paramidophenol sulfuricum</td>
<td align="left" valign="top">2 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Sulfurosum</td>
<td align="left" valign="top">72 gr</td>
</tr>
<tr>
<td align="left" valign="top">Hydrochinon</td>
<td align="left" valign="top">9 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Carbonicum</td>
<td align="left" valign="top">48 gr</td>
</tr>
<tr>
<td align="left" valign="top">Kalijum Bromatum</td>
<td align="left" valign="top">4 gr</td>
</tr>
<tr>
<td align="left" valign="top">H<sub>2</sub>O</td>
<td align="left" valign="top">1000 ml</td>
</tr>
<tr>
<td colspan="2" align="left" valign="top">

EfKe FR4 (from Fotokemika's "internal" book)

</td>
</tr>
<tr>
<td align="left" valign="top">Metol paramidophenol sulfuricum</td>
<td align="left" valign="top">1,5 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Sulfurosum</td>
<td align="left" valign="top">25 gr</td>
</tr>
<tr>
<td align="left" valign="top">Hydrochinon</td>
<td align="left" valign="top">6 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Carbonicum</td>
<td align="left" valign="top">40 gr</td>
</tr>
<tr>
<td align="left" valign="top">Kalijum Bromatum</td>
<td align="left" valign="top">1 gr</td>
</tr>
<tr>
<td align="left" valign="top">H<sub>2</sub>O</td>
<td align="left" valign="top">1000 ml</td>
</tr>
<tr>
<td colspan="2" align="left" valign="top">

EfKe FR4 (from book &qout;Elementarna tehnika fotografije" D. Kazic, Beograd 1987.)(stated as copy of Kodak D-19b)

</td>
</tr>
<tr>
<td align="left" valign="top">Metol paramidophenol sulfuricum</td>
<td align="left" valign="top">2 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Sulfurosum</td>
<td align="left" valign="top">72 gr</td>
</tr>
<tr>
<td align="left" valign="top">Hydrochinon</td>
<td align="left" valign="top">9 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Carbonicum</td>
<td align="left" valign="top">48 gr</td>
</tr>
<tr>
<td align="left" valign="top">Kalijum Bromatum</td>
<td align="left" valign="top">4 gr</td>
</tr>
<tr>
<td align="left" valign="top">H<sub>2</sub>O</td>
<td align="left" valign="top">1000 ml</td>
</tr>
</table>

Janko Belaj
17-May-2005, 06:43
...wrong! A friend of mine have seen this page and have noticed that I have post 2 instead of 3 recipes. So, here is correction (the 1st one was wrong)...

<table border="1" cellspacing="0" cellpadding="2">
<tr>
<td colspan="2" align="left" valign="top">

EfKe FR4 (from book "Fotografija", MIlan Fizi, Zagreb 1982)

</td>
</tr>
<tr>
<td align="left" valign="top">Metol paramidophenol sulfuricum</td>
<td align="left" valign="top">1,5 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Sulfurosum</td>
<td align="left" valign="top">24 gr</td>
</tr>
<tr>
<td align="left" valign="top">Hydrochinon</td>
<td align="left" valign="top">6 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Carbonicum</td>
<td align="left" valign="top">42 gr</td>
</tr>
<tr>
<td align="left" valign="top">Kalijum Bromatum</td>
<td align="left" valign="top">4 gr</td>
</tr>
<tr>
<td align="left" valign="top">H<sub>2</sub>O</td>
<td align="left" valign="top">1000 ml</td>
</tr>
<tr>
<td colspan="2" align="left" valign="top">

EfKe FR4 (from Fotokemika's "internal" book)

</td>
</tr>
<tr>
<td align="left" valign="top">Metol paramidophenol sulfuricum</td>
<td align="left" valign="top">1,5 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Sulfurosum</td>
<td align="left" valign="top">25 gr</td>
</tr>
<tr>
<td align="left" valign="top">Hydrochinon</td>
<td align="left" valign="top">6 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Carbonicum</td>
<td align="left" valign="top">40 gr</td>
</tr>
<tr>
<td align="left" valign="top">Kalijum Bromatum</td>
<td align="left" valign="top">1 gr</td>
</tr>
<tr>
<td align="left" valign="top">H<sub>2</sub>O</td>
<td align="left" valign="top">1000 ml</td>
</tr>
<tr>
<td colspan="2" align="left" valign="top">

EfKe FR4 (from book &qout;Elementarna tehnika fotografije" D. Kazic, Beograd 1987.)(stated as copy of Kodak D-19b)

</td>
</tr>
<tr>
<td align="left" valign="top">Metol paramidophenol sulfuricum</td>
<td align="left" valign="top">2 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Sulfurosum</td>
<td align="left" valign="top">72 gr</td>
</tr>
<tr>
<td align="left" valign="top">Hydrochinon</td>
<td align="left" valign="top">9 gr</td>
</tr>
<tr>
<td align="left" valign="top">Natrium Carbonicum</td>
<td align="left" valign="top">48 gr</td>
</tr>
<tr>
<td align="left" valign="top">Kalijum Bromatum</td>
<td align="left" valign="top">4 gr</td>
</tr>
<tr>
<td align="left" valign="top">H<sub>2</sub>O</td>
<td align="left" valign="top">1000 ml</td>
</tr>
</table>

Andrey Donchev
17-May-2005, 08:03
Thank you very much, Janko! Best regards!