Ilford Ortho Plus Black and White Negative Film (120 Roll Film) User Manual

Page 4

Page 4 of 5

Oct 2019

ORTHO PLUS FILM

Technical Information

PROCESSING

Ortho Plus can be processed in all types of processing equipment including spiral tanks, rotary processors,

dishes/trays, deep tanks and automatic processors. Standard capacity figures and replenishment rates can be

maintained. Ortho Plus is very robust in processing and will tolerate less than ideal processing conditions. Also,

it will not contaminate the processing chemicals.

Safelight recommendations

Either total darkness or use an ILFORD 906 (dark red) safelight illuminated by a 15 watt bulb. As a precaution

against fogging and resultant reduced image contrast, a minimum distance of 1·2 m/4ft between the safelight

and the working area is recommended. For best results, keep safelight exposure to a minimum.

Agitation

Intermittent agitation is recommended for use in spiral tanks and deep tanks. With spiral tanks, invert the tank

four times during the first 10 seconds, then invert the tank four times again during the first 10 seconds of each

further minute. Otherwise, follow the recommendations given by the processing equipment manufacturer.
For sheet film, continuous agitation is recommended in dishes/trays by rocking the dish/tray.

Stop, fix, wash and rinse

For best results it is recommended that all process solutions are kept at the same temperature or at least within

5ºC (9ºF) of the developer temperature.

Stop Bath

After development the film can be rinsed in

water but we recommend that an acid stop

bath is used such as ILFORD ILFOSTOP (with

indicator dye). ILFOSTOP is also
recommended for all machine processing

applications. When tanks or dishes (trays) of

process solutions are in use a stop bath

immediately stops development and reduces

carry over of excess developer into the fixer

bath. This helps to maintain the activity and

prolong the life of the fixer solution.

The process time given is the minimum required, if necessary, a longer time may be used and should not cause

any process problems provided it is not excessive.

Fix

The recommended fixers are ILFORD RAPID
FIXER or ILFORD HYPAM FIXER.

Wash

Wash the films in running water for 5

–

minutes at a temperature within 5ºC (9ºF) of

the process temperature. Or see note below

for greater economy when using spiral tanks.

Note:

For spiral tank use, the following method of washing is recommended. This method of washing is faster,

uses less water yet still gives negatives suitable for long term storage.

After fixing, fill the spiral tank with water at the same temperature, +/

–

5ºC (9ºF), as the processing solutions

and invert it five times. Drain the water away and refill. Invert the tank ten times. Once more drain the water

away and refill. Finally, invert the tank twenty times and drain the water away.

ILFORD ILFOSTOP

Dilution

1+19

Temperature Range

–

24ºC (64

–

75ºF)

Time (sec) at 20ºC (68ºF)

Capacity, films per litre

(unreplenished)

15x (135-36), 120 or

20.3x25.4cm (8x10in)

ILFORD RAPID OR HYPAM

FIXERS

Dilution

1+4

Temperature Range

–

24ºC (64

–

75ºF)

Time (mins) at 20ºC (68ºF)

2-5

Capacity (films per litre,

unreplenished)

24x (135-36), 120 or

20.3x25.4cm (8x10in)