Frequently Asked Questions

Where are Hoover Ferguson IBC's manufactured?

Our IBC's are made in the USA.

How high can Hoover Ferguson IBC's be stacked when not during transportation in a warehouse?

When not in transportation and in a warehouse and filled to its maximum gross weight, Hoover’s metal IBC's can typically be stacked 3 high. The APR all poly IBC and the Tuff Tank II can typically be stacked 2 high when filled to their maximum gross weight in a warehouse.

Can Hoover Ferguson IBC's be shipped stacked?

Yes, if the IBC has been design tested for stacking and marked accordingly. Hoover Ferguson does not recommend stacking filled IBC’s when transporting.

Can I ship filled IBC's stacked. How high can I stack them?

Hoover Ferguson recommends IBCs should not be stacked during transportation when full.

What is the weight that Hoover Ferguson IBC stainless steel tank can hold?

Hoover Ferguson IBC stainless steel tanks are rated to a 1.9 specific gravity. A tank with a specific gravity of 1.9 can hold a liquid up to 15.75 pounds per gallon.

How often do IBC's and Spec 57 portable tanks have to be retested?

IBC's and Spec 57 portable tanks have to be retested every 2-1/2 years. Additionally, metal IBC's have to be thickness tested every 5 years. If testing details and procedures are needed, contact your HMHGI sales representative.

Where do I find the current test date?

The date of the most recent periodic retest must be marked on the tank on or near the metal serial number plate, 49 CFR 173.32(e) (3). (NOTE: Add tab here to take user to retest pdf.

How can this test be verified?

The owner or the lessee of the tank must retain a written record indicating the date and results of all required tests and the name and address of the testing entity until the next retest has been satisfactorily completed and recorded per 49 CFR 173.32(e)(4).

What if the test date expires while the tank is filled with hazardous product?

An IBC may not be filled and offered for transportation if the inspection period has expired. This requirement does not apply to any IBC filled prior to the retest or inspection due date. 49CFR173.35 (a)

How often should each IBC used for the transportation of a hazardous material be successfully retested before further use?

Per 49 CFR 173.32(e)(1)(ii), federal regulations state all UN Specification IBCs should be pressure tested at least once every 2.5 years. All units manufactured with the UN marking also need a thickness test every 5 years.

49CFR 173.329(e) reads as follows:

173.32 Requirements for the use of portable tanks.

External inspection prior to filling. Each portable tank must be given a complete external inspection prior to filling. Any unsafe condition must be corrected prior to its being filled and offered for transportation. The external inspection shall include a visual inspection of:

  • The shell, piping, valves and other appurtenances for corroded areas, dents, defects in welds and other defects such as missing, damaged, or leaking gaskets;
  • All flanged connections or blank flanges for missing or loose nuts and bolts;
  • All emergency devices for corrosion, distortion, or any damage or defect that could prevent their normal operation;
  • All required markings on the tank for legibility; and
  • Any device for tightening manhole covers to ensure such devices are operative and adequate to prevent leakage at the manhole cover.

Hoover recommends 49CFR 180.352 Requirements for retest and inspection of IBCs and 180.605 Requirements for periodic testing, inspection and repair of portable tanks.

Can a Hoover Ferguson tank be pressurized?

No, metal and plastic IBC’s are not designed to be pressure vessels. Per CFR Title 49 for transportation, each IBC unit produced by Hoover Ferugson goes through a 3 PSIG leakproofness air test for a period of 10 minutes at the time of manufacture. Also, per CFR Title 49 for transportation, each design type produced by Hoover that requires a UN marking goes through a yearly hydrostatic pressure test. Metal IBC design types are hydrostatically pressure tested up 29 PSIG and Plastic IBC design types are hydrostatically pressure tested to 15 PSIG. Hoover’s customers or end users frequently ask if low pressure can be applied to IBC’s to help in the off-loading of their product or if a low pressure nitrogen blanket can be applied to their product. The answer is yes as long as they use a minimum intermittent pressure of between .5 PSIG vacuum to 5 PSIG pressure. Hoover has various pressure/vacuum vents which can be added or supplied with IBC’s that help with over exposure of pressures.

What is the warranty on your stainless steel IBCs?

Hoover warrants all rental tanks during the rental contract period and will replace any tank proven to be defective in material or workmanship. Hoover also warrants to the purchaser any new stainless steel tank proven to be defective in material or workmanship for 30 months from date of original invoice.

What is the tare weight of a stainless steel IBC?

Each IBC is weighed by the manufacturer and stamped on the serial number plate on the front of the IBC.

What is the UN number?

31A Y M5724
4923 kg 2375 kg 1325L
ASTM-A240 SS304 2.2 mm
31A Code number designating type of IBC
Y Packaging group the IBC is approved for (Group II and III)
0810 yy mm Month/year of manufacture
USA Country authorizing the marking
M5724 Name of manufacturer or certification agency
4923 Maximum stacking test load in kg
2735 Maximum permissible gross mass in kg
1325 Rated capacity in liters
218 Tare mass kg (estimate)
mm yy Month/year of initial leakproofness test date
mm yy Month/year of initial inspection date
304SS Material of construction
2.2 Min. Thickness MM
SER# Manufacturer serial number

How many empty stainless steel IBCs will fit on a trailer?

350 gallon IBCs - 48 in a standard 48' trailer
350 gallon IBCs - 52 in a standard 53' trailer
550 gallon IBCs - 24 in a standard 48' trailer
550 gallon IBCs - 26 in a standard 53' trailer.

What are the closure requirements for IBCs?

Per 49 CFR 173.35, all openings including removable heads, filling and vent holes must be tightly closed prior to shipment. (Click here for DOT Closure requirements and more information.)

Is my product compatible with stainless steel?

Please see the product MSDS for chemical compatibility. It is the shipper's responsibility to ensure compatibility. For a free materials compatibility chart you can download or use on line, go to

Will Hoover Ferguson parts and accessories to fit other manufacturers’ containers?

Yes, Hoover Ferguson IBC sells and distributes parts and accessories for all IBCs

What makes poly tanks a good choice for my chemical storage/application?

There are several reasons that a poly tank is a good selection. Among these reasons are:

  • Poly tanks are lower cost than stainless steel or fiberglass
  • Lightweight - less than one-half the weight of steel
  • Seamless construction for easy cleaning and leak proof service
  • Virtually maintenance free
  • Impact resistance
  • Broad range of chemical resistance
  • Withstand a variety of weather conditions
  • Translucent when molded of natural resin for visible liquid level

What material is used to manufacture Hoover Ferguson APR poly tanks?

Hoover Ferguson tanks are manufactured with LLDPE (Linear Low Density Polyethylene). This resin has good structural rigidity and impact resistance. It is resistant to a broad range of chemicals including sulfuric acid, sodium hypo chlorite, and sodium hydroxide.

How heavy a material can polyethylene tanks hold?

A tank with a specific gravity of 1.5 can hold a liquid up to 12.5 pounds per gallon at 100 degrees F. A tank with a specific gravity of 1.9 can hold a liquid up to 15.75 pounds per gallon at 73 degrees F. Please note that an increase in liquid temperature will substantially decrease the specific gravity rating. Also, certain chemicals have environmental stress cracking agents in them so higher specific gravity tanks are needed to compensate even though the weight of the chemical may be lower. Please refer to the Hoover Chemical Resistance Recommendation Chart or call Hoover Container Solutions to determine which tank design is best suited for the chemical application.

How long will a Hoover Ferguson IBC last?

Useful life is dependent on many variables, including chemical attack, IBC design type, UV exposure, and handling wear and tear. Hoover Ferguson has tanks that have been in the field for over thirty years.

Can an IBC be FDA approved?

"Designs" are not approved by the FDA, they only approve the MATERIAL used to construct the tank. Hoover can build IBC's using FDA compliant materials.

Where can I find information regarding Department of Transportation Hazardous material regulations?

The following link will take you to the Department of Transportation Research and Special Programs Hazardous Materials Website. This is an invaluable resource for anyone involved with the shipment of or the offering for shipment of Hazardous Materials in U.N. Marked IBC's.

What standard(s) is your Cargo fleet manufactured to?

DNV 2.7-1

What sizes of pipe slings do you offer?

The most common sixes are ¾”, 7/8”, 1-1/8”, 1-1/2” and multiple capacities of synthetic slings but, we will built to suit your needs.

What lifting accommodations exist on your sling racks?

Fork Pockets, Four point engineered  lift 

Can you give me “cradle to grave” data about a pipe sling?

Yes. We can give that to you with a handheld device in seconds along with inspection and certification dates using UHFRFID technology deployed on all pipe slings and sling racks. 

What size is your standard compactor hopper size?

40 cubic inches

Do you sell compactor bags for compactors?

Yes. We have many sizes that fit various compactor sizes.

Do you rent or sell any of your products?


What voltage do the compactors operate on?

Standard voltage is 240 or 460 and Air.

What is the size are the Compactor Bags?

Hoover supplies  a 30 to 50 Cubic foot trash bag we call it the UNIVERSAL Red or White strap bag.

How much weight will the compactor bag hold?

Hoover Has a Red Strap Bag that is  designed to hold 2000LBS and a White Strap Bag Designed to hold up to 4000 LBS.

What is the operating voltage of the Tuff Gut Food grinder?

We can accommodate all standard voltages 240 to 480 or Air and Hydroluic is available also.

What is the Ullage (Unfilled space) and the Fill Level for your tanks?

  • Fill Level - 98% of Tanks capacity for non-hazardous products
  • Fill Level - 95% of Tanks capacity for hazardous products

Is the product I’m intending putting in the tanks compatible with the tank lining?

  • Chemical tanks – SS316L
  • Acid tanks – Butyl/ LLDPE lined

What are the crossover supply options for tanks?

  • 2”BSP to 3”, 4” – BSP, NPT
  • 3”BSP to 2”, 3”, 4” - BSP, NPT
  • 4”NPT to 2”, 3”, 4” - BSP, NPT

Can the tanks be returned un cleaned?

Tank cleaning can be organized by Hoover Ferguson for CLIENT account. Any disposal costs will be charged at cost plus 15%. Tank (s) remain on full hire until the cleaning / repair work has been carried out / agreed.

What makes a DNV 2.7-1 Certified Offshore container different?

DNV 2.7-1 certified offshore containers are specifically designed for dynamic lifting via padeyes and a DNV certified lifting sling equipped with shackles. They are inspected at the design stage, material procurement, production and final load & NDE tested. Not only is a prototype tested but a specified number of randomly selected units from each batch are tested at a rate that is 5 times the testing rate for typical ISO shipping containers. These containers have solid steel construction, including the flooring. They weigh nearly twice the comparably sized ISO container which is critical in their ability to maintain their upright position during transit through rough seas. They are required to have a uniquely identified DNV certified lifting sling, significantly stronger steel, more stringent production compliance and to have all the testing documentation to prove their worthiness for the rigors of offshore conditions.

What connection are on your mud-skips?

4” camlock and 6” vacuum connection points on new mud skips

Are the Refrigeration units humidity controlled?

Yes we can control the humidity of the refrigeration units at Chiller setting between 60% and 90%

Do the assets come complete with Slings and Shackles?

Yes all DNV 2.7-1 assets come complete with wire rope slings and shackles from our UK fleet (Assets in mobilising from our Norwegian facility will come with Chain slings) the cost for these items are included in the day rate supplied

What are the Electrical Capabilities of the refrigeration units?

  • 2.5M Units are 230 / 110V Single Phase OR 380 – 480v 2 Phase + E 50/60Hz
  • 3M and 6M Units are 3 Phase 50Hz 380 – 415V 60Hz 440 – 460V

Is insurance included with the hire of modules?

Unless otherwise agreed in writing, the Company renting the above equipment shall be responsible for insuring the equipment for its full replacement cost.  Hoover Ferguson can offer an optional insurance waiver, subject to separate terms and conditions.  Further details of this insurance waiver can be found in our Terms & Conditions a copy is available on request.

Can Hoover Ferguson provide Assistance with the hook up and commissioning of modules?

As the modules are offered Ex-Works (Incoterms 2010) Hoover Ferguson Aberdeenshire all hook up and connection to on-board services is by others. However, should our assistance with A60 linking/ commissioning be required, we can provide a schedule of rates for mobilising our technicians to the required location.

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