Table 2: Storage Life of Microfilms

 

 

Anticipated Storage Life

 

Film/Type/Parameter

 

 

 

Medium Term

Extended Term

Long Term

 

 

(Minimum of 10 Years)

(Minimum of 100 Years)

(Indefinitely)

 

 

 

 

Silver-Gelatin Films

 

Not above 0.030 grams

Not above 0.014 grams

Residual Hypo

(1), (2)

per square meter (1)

per square meter (1)

 

 

 

 

Residual Silver Salts

No more than perceptible tint by spot stain test.

 

 

 

 

All Films—

 

 

 

Storage Conditions

 

See Table 3

 

Temperature and

 

 

 

 

 

Relative Humidity

 

 

 

 

 

 

 

Air Conditioning

Not necessary

Essential—including slightly positive air pressure.

 

unless film records

 

 

 

are subjected to

 

 

 

frequent or sustained

 

 

 

high humidity (3)

 

 

 

 

 

Air Purification

Normal

Must be free from airborne gases, dirt particles,

 

 

and other contaminants.

 

 

 

 

Enclosures

Not necessary with

If proper humidity control is provided, plastic or

 

moisture control

metal, unsealed, can be used.

 

and/or air conditioning

If adequate humidity control is not available, only

 

 

metal or glass sealed containers are acceptable.

 

 

 

 

NOTES:

(1)Expressed as thiosulfate ion.

(2)Specific limits have not been set—the recommended washing should be satisfactory.

(3)Dehumidification may be necessary even though automatic air conditioning is not practical.

16

D-31 June 2002

Page 19
Image 19
Kodak D-31 manual Storage Life of Microfilms, Silver-Gelatin Films

D-31 specifications

Kodak D-31 is a color negative developer that has garnered attention for its unique set of features tailored to meet the demands of both professionals and enthusiasts in the field of photography. Designed primarily for use with color negative films, Kodak D-31 is known for delivering impressive results in terms of color reproduction, contrast, and image sharpness.

One of the standout characteristics of Kodak D-31 is its flexibility in processing various types of color negative films. This developer can be used for a range of ISO sensitivity ratings, making it versatile for different photographic situations. Whether capturing landscapes, portraits, or street photography, D-31 ensures that the vibrant colors and subtle tones of each scene are accurately represented.

The technology behind Kodak D-31 incorporates a balanced mixture of color-forming agents and stabilizers that contribute to its reliability. The developer uses a carefully controlled chemical composition that ensures consistent performance with minimal grain, which is a critical factor for photographers who demand high-quality prints. The result is images that display fine detail and smooth transitions in color, which can be particularly important in post-processing and printing.

Kodak D-31 is designed for easy use, featuring a simple processing workflow that can be followed even by those new to film development. The Developer can be used with standard tanks and is compatible with both manual and automatic processing equipment. This ease of use makes D-31 an excellent choice for educational settings and home darkrooms, as it allows users to focus more on the art of photography rather than the technicalities of the developing process.

An additional advantage of Kodak D-31 is its ability to deliver consistent results across different batches, which is essential for those looking to maintain a cohesive portfolio. Photographers can rest assured that each roll developed will yield similar results, thanks to the high degree of control in the chemical composition and the assurance of quality that Kodak has provided for decades.

In summary, Kodak D-31 stands out as a reliable, versatile, and high-performance color negative developer that is well-suited for a variety of photographic applications. Its thoughtful formulation offers photographers the ability to capture and reproduce color with precision, making it a preferred choice for both hobbyists and seasoned professionals alike. With its blend of technology and ease of use, D-31 continues to be a valuable tool for anyone looking to explore the rich world of color film photography.