Storage Facilities

Summary of Requirements for Storage and Preservation of Records on Kodak Microfilm

The type of storage vault, safe, cabinet, or area selected must be based on the value of the film records and their intended storage life. In general, one roll per container is recommended. Containers should be stored in metal cabinets. Cabinets should be spaced in the room so there are no stagnant air pockets or localized areas where temperature and humidity may reach higher levels than the general condition. If humidity is not controlled, sealed metal or glass containers are required.

Although the same general storage principles apply to medium-term and long-term storage records, much greater care must be taken to obtain maximum protection for long-term storage records; makeshift or temporary arrangements should not be considered.

In summary, Table 3 indicates the conditions that are considered suitable for black-and-white silver- gelatin, thermally processed silver, diazo, and vesicular Kodak Microfilms.

Table 3: Storage Temperature and Relative Humidity

		Extended and Long Term			Medium Term

Film Type	Base	Relative	Temperature		Relative	Temperature
Film Type	Base		(Max.)			(Max.)
			(Max.)			(Max.)
		Humidity			Humidity
		Humidity	°C	°F	Humidity	°C	°F
			°C	°F		°C	°F

Silver-Gelatin	Cellulose ester	20–50%	2	35.6	20–60%	25	77
	(Acetate)	20–40%	5	41.0
		20–30%	7	44.6

Silver-Gelatin	Polyester	30–40%	21	69.8	20–60%	25	77

Thermally Processed Silver	Polyester	15–30%	21	69.8	20–60%	25	77

Diazo	Polyester	20–50%	-10	14	20–60%	25	77
		20–50%	-3	26.6
		20–50%	2	35.6

Vesicular	Polyester	15–50%	20	70	20–60%	25	77

Electro-Photographic	Polyester	15–50%	20	70	20–60%	25	77

Photo-Plastic	Polyester	15–50%	20	70	20–60%	25	77

Color	Cellulose ester	20-30%	-10	14	20–60%	25	77
	(Acetate)	20–40%	-3	26.6	20–60%	25	77

Color	Polyester	25–30%	2	35.6	20–60%	25	77

NOTE:If the storage temperature is sufficiently low or if the air where the film is to be handled is quite moist, leave the film in its closed container until it warms up to approximate room temperature. Otherwise, condensation of moisture will occur on the cold film surfaces.

D-31 June 2002

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.

Kodak D-31 manual Storage Facilities, Storage Temperature and Relative Humidity

Models: D-31