KGW

KGW Isotherm 30/4–34 Large Dewar Insulating Vessels

Name: KGW Isotherm 30/4–34 Large Dewar Insulating Vessels
Brand: KGW

Series: Large Dewar insulating vessels

Model: 30/4 C to 34 C

30/4–34 C/CAL large-opening Dewars hold approximately 4–28 L for storage and transport of temperature-sensitive goods such as dry ice.

Application / measured object:

Storage and transport of temperature-sensitive goods such as dry ice, and large-capacity insulated containment.

Application area: Materials Preparation & Research

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Product overview

30/4–34 C/CAL large-opening Dewars hold approximately 4–28 L for storage and transport of temperature-sensitive goods such as dry ice. C and CAL use blue-coated metal and aluminium casings respectively, with handled insulating lids.

Key features

Robust protective casings and large openings facilitate handling of temperature-sensitive goods.
Borosilicate glass 3.3 inserts, fully silvered as standard, with viewing-stripe and shortened alternatives.
Insulating lids and carrying handles; C/CAL principally differ in casing material.
Types 40–46 are matching replacement glass inserts for 30/4–34, not complete cased vessels.
Linen dry-ice bags and insulating washers are optional; insulating washers are recommended for dry-ice storage.
The performance table specifies CO₂ evaporation in kg/d, not the LN₂ L/d values used in other series.

Construction and dimension illustrations

KGW Isotherm 30/4–34 Large Dewar Insulating Vessels dimension drawing — Manufacturer dimension drawing; letters correspond to the specification table.

Example of the CAL aluminium casing; C uses a blue-coated metal casing.

Technical specifications and models

Models and technical specifications

Type	max. Contents approx. [L]	A [mm]	B [mm]	C [mm]	D [mm]	E [mm]	Weight approx. [kg]	Evaporation rate CO2 approx. [kg/d]
30/4 C/CAL	4	158	183	210	250	340	5	0.45
30/7 C/CAL	7	158	183	210	400	490	6	0.4
30 C/CAL	7	200	230	250	275	385	6	0.45
31 C/CAL	10	200	230	250	350	475	8	0.4
32 C/CAL	14	200	230	250	500	610	9	0.4
33 C/CAL	21	250	280	300	480	615	14	0.6
34 C/CAL	28	250	280	300	620	750	16	0.6

Models, refills and article numbers

Type	Article no.	Type	Article no.	Replacement glass	Article no.
30 / 4 C	1248	30/4 CAL	1258	40	1231
30 / 7 C	1249	30/7 CAL	1259	41	1232
30 C	1241	30 CAL	1251	42	1233
31 C	1242	31 CAL	1252	43	1234
32 C	1243	32 CAL	1253	44	1235
33 C	1244	33 CAL	1254	45	1236
34 C	1245	34 CAL	1255	46	1237

Insulation accessories

type	Article no. Linen bag	Article no. Insulating washer
31 C/CAL	1632	1642
32 C/CAL	1633	1643
33 C/CAL	1634	1644
34 C/CAL	1635	1645

Applications

Storage and transport of temperature-sensitive goods such as dry ice, and large-capacity insulated containment.

Selection guidance

Select capacity, opening and height, then C/CAL casing and any linen bag or insulating washer. Match replacement inserts 40–46 to the complete vessel.