benz packaging
Maximum-Capacity Grade

BENZPACK® BEDRY™ ULTRA High-Concentration Calcium Chloride Container Desiccant
Full Technical Reference

Ultra-high-purity calcium chloride. Up to 600% absorption. Leak-proof gel. DIN 55473 certified. Engineered for the longest, hottest and most humid ocean routes where standard desiccants run out of capacity before the voyage ends.

Home› Anti Humidity› Container Desiccants› BEDRY™ ULTRA Technical Specifications
← Compare with standard BEDRY™
Overview

BENZPACK® BEDRY™ ULTRA is the maximum-capacity grade of the BEDRY™ calcium chloride container desiccant family. It uses an ultra-high-purity calcium chloride formulation that raises the absorption ceiling to up to 600% of its own weight, accelerates the onset of absorption, and extends protective service life, so a single installation holds a container dry across the longest and most humid voyages without exhausting its capacity mid-transit.

Where standard BEDRY™ is specified for typical 20 to 30 day ocean routes, BEDRY™ ULTRA is engineered for the punishing cases: 35 to 45 day trans-Pacific and round-Africa sailings, equatorial and monsoon corridors, fully timber-packed heavy machinery, and the highest-value consignments where running out of desiccant capacity in the final week of a voyage is not an acceptable risk. Like every BEDRY™ product it binds absorbed moisture into a stable, leak-proof gel, certified to DIN 55473 and registered under REACH.

Technical Specifications
ParameterSpecification
Active IngredientUltra-high-purity Calcium Chloride (CaCl²), minimum 94% purity
Absorption MechanismChemical absorption via deliquescence into a stable, leak-proof gel matrix
Total Absorption CapacityUp to 600% of own weight
Absorption Onset / RateAccelerated onset; peak kinetics above 60% RH, faster than standard 90% grade
Gel RetentionMulti-layer proprietary gel-locking layer. Zero liquid escape under transit handling
Operating Temperature-25°C to +70°C
Effective Humidity Range35% RH to 100% RH. Peak performance above 60% RH
DIN 55473Certified
REACH EC 1907/2006Registered
Bag MaterialMulti-layer laminated non-woven fabric with integrated brine-locking gel layer
Available Formats250g sachet | 500g sachet | 1kg pole-mount | 2kg pole-mount
Container Coverage1 x 1kg unit per 38 CBM of internal container volume (higher capacity per unit)
Recommended (20ft container)3 units standard cargo. 4 to 5 units hygroscopic cargo
Recommended (40ft container)5 to 6 units standard cargo. 8 to 10 units hygroscopic cargo
Service Duration90 to 120 days continuous (extended-voyage grade)
Shelf Life24 months in original sealed packaging

BEDRY™ ULTRA shares the certification, gel-retention and installation system of standard BEDRY™; the ULTRA grade differs by its higher-concentration calcium chloride formulation and the resulting higher capacity, faster onset and longer service life.

Global Certifications

Every certification below is independently verified. Original certificate copies and test reports are available on request for OEM qualification or regulatory submissions.

StandardScope and Issuing AuthorityWhy It Matters for BuyersStatus
DIN 55473German Institute for Standardisation. The international reference standard for industrial packaging desiccants, specifying performance requirements, test methods and the formal Desiccant Unit (DU) definition used for all container desiccant calculationsThe baseline qualification required by European automotive OEMs, logistics companies and industrial exporters. A container desiccant without DIN 55473 certification cannot be used in European-specification export packagingCertified
REACH EC 1907/2006European Chemicals Agency regulation requiring registration of chemical substances before sale or use in the EU market, applicable to calcium chloride as a shipped industrial substanceUnregistered substances are subject to EU border seizure. REACH registration is the legal prerequisite for any chemical product used in packaging destined for European marketsRegistered
Leak-Proof Gel VerificationIndependent third-party testing confirming zero liquid egress from fully saturated units under simulated maritime transit vibration, impact and inversion conditionsContainer carriers and cargo insurers increasingly require leak-proof verification for any desiccant used in full-container-load shipments. Brine drip causes container floor corrosion and cargo contamination claimsVerified
Science and Mechanism

Why a Higher-Concentration Formulation Raises the Ceiling

Calcium chloride absorbs moisture by deliquescence: it reacts with water vapour and dissolves into a calcium chloride brine, and the reaction continues until all available calcium chloride has been consumed. The total moisture a unit can capture is therefore governed by the mass of active, available calcium chloride it contains. BEDRY™ ULTRA raises the active-ingredient purity to a minimum of 94%, which increases the quantity of reactive calcium chloride per gram of product and lifts the absorption ceiling to up to 600% of unit weight.

Faster Onset, Sustained to the End of the Voyage

The deliquescent reaction rate is driven by the vapour-pressure differential between the brine and the surrounding air, and that differential is greater for a higher-concentration formulation. ULTRA begins absorbing sooner and holds a higher capture rate deeper into the voyage, so on a 40 to 45 day route it does not approach saturation in the final, often most humid, leg, the window in which an under-specified desiccant programme fails and container rain forms.

When to Specify ULTRA Over Standard BEDRY™

Standard BEDRY™ is the correct, cost-effective choice for typical 20 to 30 day routes and standard cargo. Specify BEDRY™ ULTRA when the voyage is long (35 days or more), the route crosses equatorial or monsoon climate zones, the cargo is heavily timber-packed or otherwise highly hygroscopic, the consignment value is high, or container ceiling anchor points are limited and fewer, higher-capacity units are required. The two grades use the same installation system and can be specified per route from one supplier.

Industry Applications
IndustrySpecific ApplicationKey Challenge SolvedStandard
Heavy Machinery ExportCNC machine tools, presses, compressors and turbines in ISPM-15 timber crates on long trans-ocean routesTimber crating releases intense moisture over 40+ day voyages. ULTRA carries the extended capacity to hold the container dry to the final legDIN 55473
Automotive OEM (Long Routes)Engine, drivetrain and EV components shipped trans-Pacific or round-Africa to assembly plantsSurface-corrosion rejection on extended high-humidity transits where standard desiccant saturates earlyDIN 55473
Steel and Metal FabricationsCold-rolled coils, galvanised sheet and structural steel on equatorial corridorsHolds container RH below the ferrous-oxidation threshold across the entire voyage, not just the first weeksDIN 55473
Project and Break-Bulk CargoHigh-value single consignments where re-supply or re-drying mid-transit is impossibleMaximum capacity per unit reduces installation count where anchor points are limitedDIN 55473
Comparative Performance
ParameterBEDRY™ ULTRABEDRY™ (Standard)Silica GelStandard CaCl² (77%)
Active Purity≥94% CaCl²≥90% CaCl²n/a~77% CaCl²
Absorption CapacityUp to 600% of weightUp to 500% of weight~25% of weight~200% of weight
Best-Fit Voyage Length35 to 45+ days20 to 30 daysShort / dry routesUp to ~25 days
Service Duration90 to 120 days60 to 90 daysSaturates early45 to 70 days
Leak Risk After SaturationZero. Gel lockedZero. Gel lockedNone (stays solid)Brine drip risk
Container Rain EliminationProven on longest routesProven on standard routesInsufficientAdequate at quantity
Total Cost per Long-Haul ContainerLowestLowHighestModerate
Frequently Asked Questions
What is the difference between BEDRY™ and BEDRY™ ULTRA?

Both are leak-proof calcium chloride container desiccants certified to DIN 55473 and registered under REACH, using the same gel-locking housing and pole-mount installation system. The difference is the formulation: ULTRA uses a higher-concentration, ultra-high-purity calcium chloride (minimum 94%) that raises the absorption ceiling to up to 600% of weight, begins absorbing faster, and sustains protection for 90 to 120 days. Standard BEDRY™ (up to 500%, 60 to 90 days) is the cost-effective choice for typical 20 to 30 day routes; ULTRA is specified for the longest and most humid voyages.

When should I choose ULTRA instead of standard BEDRY™?

Specify ULTRA when the voyage is 35 days or longer, the route crosses equatorial or monsoon climate zones, the cargo is heavily timber-packed or highly hygroscopic, the consignment value is high, or container ceiling anchor points are limited and you need fewer, higher-capacity units. For standard cargo on routine 20 to 30 day routes, standard BEDRY™ is the correct specification.

How many ULTRA units does a 40ft container need?

As a baseline, 5 to 6 x 1kg ULTRA pole-mount units for standard cargo and 8 to 10 units for heavily hygroscopic or timber-packed cargo in a 40ft container, fewer than standard BEDRY™ because each ULTRA unit carries more capacity. The precise figure follows the DIN 55473 Desiccant Unit calculation from container volume, packing-material weight, barrier films and voyage duration; BENZPACK provides a complimentary calculation for your exact route and cargo.

Does ULTRA carry the same certifications and leak-proof guarantee?

Yes. BEDRY™ ULTRA is certified to DIN 55473, registered under REACH, and independently verified leak-proof under maritime transit vibration, impact and inversion testing. The absorbed moisture is permanently bound into a stable gel with zero liquid egress, identical to standard BEDRY™.

Can ULTRA be used with BENZPACK VCI films?

Yes. ULTRA manages the bulk atmospheric moisture load while BENZPACK VCI films provide molecular corrosion inhibition on metal surfaces. The two technologies work by different mechanisms, are fully compatible, and are the recommended dual-protection system for high-value metal exports on long routes.

Request the ULTRA Data Sheet or a Route-Specific Calculation

Our technical team provides complimentary DIN 55473 Desiccant Unit calculations, certification documentation and bulk pricing for OEM and distribution partners worldwide.

Contact Technical Team
benz packaging solutions
Inquire Now

BENZ Packaging consistently provides reliable and efficacious Corrosion Prevention & Protective Packaging Solutions to clients worldwide.

Submit
benz packaging solutions