| 1 | Product type and condition | List whether products are dry, moist, liquid, oily, powdered, delicate, or sharp-edged. | Chamber machines are commonly suited to moist foods and liquids because the product and pouch are vacuumed inside the chamber. External-suction machines are generally better suited to dry products and require compatible embossed bags. | Confirm that the machine can handle representative product samples without liquid carryover, product damage, or sealing contamination. |
| 2 | Product dimensions and load size | Record the longest, widest, and tallest item, as well as the number of items placed in each pouch. | Allow room for the pouch opening to lie flat across the seal bar. For chamber equipment, check both chamber dimensions and usable loading height. | Request the usable chamber size, seal-bar length, maximum loading height, and a demonstration using the largest intended pack. |
| 3 | Bag material and format | Specify pouch dimensions, material structure, thickness, and whether bags are smooth or embossed. | Chamber machines typically use smooth vacuum pouches; many external-suction models need embossed bags to allow air to escape. The pouch must also suit the product, storage conditions, and sealing method. | Check compatible pouch types, supported material thickness, seal-bar configuration, and whether the supplier recommends a particular seal temperature or cycle setting. |
| 4 | Required production rate | Estimate packs per hour during normal operation and at peak demand, including time spent loading and unloading. | A single-chamber machine may require an operator to load each cycle. A double-chamber design can allow loading at one side while the other side runs, which may improve workflow. Actual output depends on product, bag size, vacuum cycle, and operator speed. | Ask for a cycle-time estimate using your product and pouch, and distinguish machine cycle time from achievable packed units per hour. |
| 5 | Vacuum performance and pump capacity | Define the required evacuation level and how consistently it must be reached for your product and shelf-life process. | Pump capacity affects evacuation time, but chamber size, product characteristics, pouch layout, and the selected vacuum setting also matter. A higher-capacity pump is not automatically the best fit for every application. | Request the pump capacity, stated vacuum range, expected cycle time, and maintenance requirements. Validate the finished pack with suitable process and quality checks. |
| 6 | Seal quality and seal-bar layout | Identify the pouch width, number of seals needed, and whether the product may leave residue near the seal area. | Seal-bar length must accommodate the pouch opening. Double or multiple seal bars can be useful where pack security or higher output is required; consistent, clean seal areas are essential for reliable seals. | Confirm seal-bar length, number of bars, sealing controls, available seal profiles, and the recommended inspection method for finished seals. |
| 7 | Gas-flush or modified-atmosphere needs | Decide whether the product needs gas flushing to reduce crushing or to support a defined packaging process. | Gas flushing can help protect delicate products, but the gas mixture and packaging conditions must be selected for the specific product. It is not a substitute for appropriate food-safety controls. | Check whether gas flushing is available, what connections and controls it requires, and whether the supplier can test the proposed gas and pouch combination. |
| 8 | Cleaning and hygiene requirements | Describe cleaning frequency, exposure to moisture or food debris, and any sanitation procedures used at the site. | Choose construction and access features suited to the cleaning routine. Products that release liquids or crumbs may need additional attention around the chamber, seal area, and pump protection components. | Ask about cleaning instructions, removable parts, drainage or spill management, and the machine’s suitability for your operating environment. |
| 9 | Utilities, space, and installation | Measure available floor or bench space and confirm electrical supply, ventilation, and any gas supply requirements. | Check the machine’s overall dimensions, operating clearance, power requirements, and shipping weight before planning installation. Larger or higher-output models may require more space and electrical capacity. | Obtain the installation drawing, electrical specification, utility requirements, and any requirements for commissioning or operator training. |
| 10 | Maintenance, service, and total cost | Set expectations for operator training, routine maintenance, spare parts, and acceptable downtime. | Compare the full operating cost, including pouches, routine service, consumables, and expected production needs—not just the purchase price. A preventive maintenance schedule can help maintain consistent performance. | Confirm warranty terms, service availability, spare-parts lead times, maintenance intervals, and the recommended list of wear parts. |