andrew_hoi

<p>Hi,<br>

As per the darkroom cookbook, Sodium Isoascorbate can substitute Sodium Ascorbate with weight with weight.<br>

But do anyone try MYTOL with Sodium Isoascorbate .</p>

<p>Andrew</p>

<p>Hi all,<br>

I mix the Mytol by myself but find the Sodium Ascorbate is too expensive and difficult to buy.<br>

SO, I want to know , can I use Sodium Isoascorbate to substitute Sodium Ascorbate ?<br>

THX<br>

Andrew</p>

<p> </p>

<p>Larry,<br>

It is BW.<br>

I would like to have a formula that can hardenering the BW film either in fixer bath or separated bath...</p>

 

<p>Hi,<br>

Because I found the film is too soft after developed. So I want to have a hardener bath for film.<br>

And Formaldehyde hardener bath found...but Formaldehyde is toxic.<br>

So can anyone show me a hardener bath formula other then SH-1 ???</p>

 

<p>Hi,<br>

I would like to have a 4X5 enlarger and the LPL is the first choice(Much more cheaper).<br>

However, I don't konw the different between LPL7451 and LPL7452.<br>

Can anyone give me some comments ???</p>

<p>Andrew</p>

<p>Hi,<br>

I found a fixer formula from other forums,<br>

 

<table border="0" cellspacing="0" cellpadding="0" width="543">

<colgroup span="1"><col span="1" width="301"></col><col span="1" width="138"></col><col span="1" width="40"></col><col span="1" width="64"></col></colgroup>

<tbody>

<tr height="17">

<td width="301" height="17">Water(52C)</td>

<td width="138"></td>

<td width="40" align="right">600</td>

<td width="64">ml</td>

</tr>

<tr height="19">

<td height="19">Sodium Thiosulfate (crystalline)</td>

<td >硫代硫酸鈉/海皮</td>

<td align="right">360</td>

<td >g</td>

</tr>

<tr height="19">

<td height="19">Ammonium sulfate</td>

<td >硫酸銨</td>

<td align="right">60</td>

<td >g</td>

</tr>

<tr height="19">

<td height="19">Sodium sulfite</td>

<td >亞硫酸鈉</td>

<td align="right">15</td>

<td >g</td>

</tr>

<tr height="19">

<td height="19">Sodium metabissulfite</td>

<td >重亞硫酸鈉</td>

<td align="right">10</td>

<td >g</td>

</tr>

</tbody>

</table>

</p>

<p>Is it a rapid fixer ?<br>

How long I should fix the TMAX ?<br>

How many rolls I can fix per 1L ?</p>

<p>THANKS.</p>

<p>Andrew</p>

 

<p>Hi,<br>

I had purchased a Jobo 4551 print drum from internet.<br>

However, this is not include a instruction manual...<br>

so can anyone scan a soft copy to me(Better in 200dpi) ?<br>

Please mail to "<a href="mailto:andrew_hoi@yahoo.com">andrew_hoi@yahoo.com</a>"<br>

THANKS . </p>

<p>Andrew</p>

<p>Yes, May be I should better to purchase the ammonium thiosulfate.<br>

THANKS All.</p>

<p>Rowland,<br />i found a post from photo.net<br /><a href="../black-and-white-photo-film-processing-forum/002awF">http://www.photo.net/black-and-white-photo-film-processing-forum/002awF</a> <br />the ammonium thiosulfate can mixing by sodium thiosulfate and ammonium chloride.<br />If not, can anyone tell me how can I have Ammonium Thiosulfate(60%).</p>

 

 

<p>Hi all,<br />First at all, I am new in chemistry.<br />And I would like to mix the TF-3 Fixer.<br />Althrough, I can found out the formual in photo.net<br />

<table border="0" cellspacing="0" cellpadding="0" width="543">

<colgroup span="1"><col span="1" width="301"></col><col span="1" width="138"></col><col span="1" width="40"></col><col span="1" width="64"></col></colgroup>

<tbody>

<tr>

<td colspan="4" width="543"><strong><em>TF3 Alkaline Fixer</em></strong></td>

</tr>

<tr>

<td><em>Ammonium Thiosulfate(60%)</em></td>

<td><em></em></td>

<td align="right">800</td>

<td>ml</td>

</tr>

<tr>

<td>Sodium Sulfite</td>

<td> </td>

<td align="right">60</td>

<td>g</td>

</tr>

<tr>

<td>Sodium Metaborate</td>

<td> </td>

<td align="right">5</td>

<td>g</td>

</tr>

<tr>

<td>Cold Water To Make</td>

<td> </td>

<td align="right">1000</td>

<td>ml</td>

</tr>

</tbody>

</table>

<br />but Ammonium Thiosulfate(60%) is expensive and difficult to buy.<br />After seach from internet, someone recommand to mix Ammonium Thiosulfate(60%) in the following formula :<br />

<table border="0" cellspacing="0" cellpadding="0" width="543">

<colgroup span="1"><col span="1" width="301"></col><col span="1" width="138"></col><col span="1" width="40"></col><col span="1" width="64"></col></colgroup>

<tbody>

<tr>

<td colspan="4" width="543"><strong>Ammonium Thiosulfate</strong></td>

</tr>

<tr>

<td>Water</td>

<td> </td>

<td align="right">800</td>

<td>ml</td>

</tr>

<tr>

<td>Sodium Thiosulfate(pentahydrated)</td>

<td> </td>

<td align="right">1406</td>

<td>g</td>

</tr>

<tr>

<td>Ammonium Chloride</td>

<td> </td>

<td align="right">600</td>

<td>g</td>

</tr>

<tr>

<td>Cold water to make</td>

<td> </td>

<td align="right">1500</td>

<td>ml</td>

</tr>

</tbody>

</table>

<br>

My question is:<br />Can I use this solution for TF-3 Fixer ?<br />Do this so solution equal Ammonium Thiosulfate(60%) ?<br />Also, i this formula incorrect, can anyone give me the right one ?<br>

Andrew</p>

 

 

<p>Hi Shakti,<br>

I aslo buy sodium thiosulfate (pentahydrate ) from china.<br>

Can you mixed the fixer normally ?<br>

Also can you give me the recipe of the fixer in detail ? I am newby and interest in this topic.</p>

<p>THX</p>

<p>Andrew</p>

<p>Hi,<br>

Do anyone can tell Which color is more sensitive to TMX and TMY ?<br>

and which color is less sensitive to...</p>

<p>Andrew</p>

<p>Yes, Xtol has its own replenisher but i think it is a little bit different with the original XTOL in the chemical(Most developer replenisher different with the original developer).</p>

 

<p>Hi,<br>

Do anyone know the formula of replenishment of mytol ?</p>

<p>Andrew</p>

<p>OOOIC...<br>

But by the way, is it means Kodak Balanced Alkail is Sodium metaborate ?<br>

Actually I do not have any in chemistry...so haHeHA</p>

 

Hi,

I am new in chemistry...

and I want to know Is Kodak Balanced Alkail same as Balanced Alkali ?

IF no , how can I prepare Kodak Balanced Alkali ?

 

 

 

 

THX

 

Andrew

<p>Thanks Bruce...<br>

I think your opinion is right...<br>

May be I will use a 2521 with a print drum.</p>

 

<p>Hi,<br>

Since I will develop BW in 135,120 and 4X5 (Also may be will develop print)...<br>

So can any one give me some advice that how jobo tank I should choose ?</p>

<p>Andrew</p>

<p>OOOO..yes, I scan it with epson v700.<br>

I had tried to cal the monitor with black and white scale index by eye....<br>

the color from the index scale is ok, no gray color...but when I scan the film, it is gray...</p>

<p>Hi,<br>

Since I had mixed the mytol and testing with TMAX400.<br>

I found the result is a little bits gray...<br>

Developer formula :Mytol (from jack's photographic )<br>

Duritation : 1 + 3<br>

Time : 13.45 Mins<br>

Temp: 20</p>

<p>Do anyone konw why ? and how can I fix it !</p>

<p>Andrew</p>

So, can anyone tell me which safelight good for TMAX400 ....

Hi,

I would like to develop 4X5 in tray...

However, I don't know can I trun on the safelight or not ?

Can I do it while in developing ....

Thanks Bob

Hi,

 

Can I use Acrylic to do a reel for developing tank ?

 

THX

how about 2800 series ?

can I use print drum as film tank !?

Since I will have paper development ...so can I use 2800 series !?