RO 24 Isn’t Always 720 ml: The Hidden Trap in RO Series Container Sizes (2026)

An RO series container is a round plastic food container with a wide, open mouth and a clear snap-fit lid, sold by an ounce code: RO 16, RO 24, RO 32 or RO 40. RO stands for Round Open. Restaurants, cloud kitchens and distributors across India order it by that code every day.

The catch is that the code is a trade habit, not a standard. Search for an RO 24 container in India and you will find it listed at 710 ml, 720 ml and 875 ml by different sellers. If you order by code alone, you can end up with a container that does not hold the portion you planned for.

This guide explains what each RO series container size holds, which Indian dishes each one suits, and what to check before you place a bulk order.

What Is an RO Series Container?

An RO series container is a wide, round, open-mouth plastic container with a separate clear lid, named by its capacity in ounces. “RO” means Round Open, which describes the shape: a broad top opening and a sloped wall that make it easy to fill, plate and eat from.

Many buyers simply call it a bowl container or a parcel bowl. If you have ordered “the round black bowl with a clear lid” for biryani or noodles, you have most likely ordered an RO series container.

DAKON, the plastic container brand made by Alfa Foil, produces the RO series in four sizes and three base colours: milky, transparent and black. A black base suits presentation-led delivery, because rice and gravy look neater against it on arrival. Milky and transparent bases suit kitchens and counters where staff want to see the contents at a glance.

RO Series Container Sizes in ml: RO 16, 24, 32 and 40

Each RO series container size is named after its capacity in US fluid ounces. One fluid ounce is about 29.6 ml, so the number in the code tells you the nominal volume.

The table shows that every DAKON RO series container is named for its real ounce capacity, so the code and the volume line up. The ml figures are brim capacity. Fill a little below the rim so the lid seals cleanly, especially with gravy.

Why “RO 24” Means Different Things From Different Suppliers

An RO series container code is a naming habit the trade picked up from ounce-based sizing. There is no common rule for what an “RO 24” must hold. Some manufacturers round the number, different moulds carry the same code, and some list a figure measured to the very brim.

That is how the same code ends up at 710 ml from one seller and 875 ml from another. The difference is more than 150 ml, which is a large share of a single portion of rice.

For a restaurant, that gap shows up as a box that looks half empty, or one that will not close over the portion you trained staff to pack. For a distributor, it shows up as a client complaint after you switched supplier at the same code.

Before you buy any RO series container in bulk, check four things:

1. The capacity in ml or oz, not just the code.
2. The shape, from a photo or sample: how wide the mouth is and how steep the wall is.
3. The lid fit with your own dish. Pack a real portion, close it, and tilt it.
4. A sample before the bulk order, especially when you change supplier.

Which RO Series Container for Which Dish?

The right RO series container depends on the dish and the portion, not just the menu category. Here is how kitchens across India typically use the four sizes.

Use this table as a starting point, then test with your own recipe and portion weight. If biryani is your main dish, our biryani container size guide goes into portions in more detail. An RO series container works well for biryani because the wide mouth lets you layer rice and garnish without crushing them.

RO Series Container vs Regular Round Container: When to Choose Which

An RO series container and a regular round container solve different problems, so many kitchens stock both.

Choose an RO series container when presentation matters and the dish is eaten straight from the box: biryani, pulao, noodles, fried rice and meal bowls. The wide, open mouth shows the food well and is easy to eat from.

Choose a tall round container for thinner gravies, dal and soups, where a narrower top and higher wall help. Choose a flat round container for dry sides and smaller portions. DAKON makes both, from 25 ml to 1,500 ml, in the plastic round container range.

A common setup for a cloud kitchen is an RO 24 for the main dish, a tall round container for the gravy and a small round container for chutney or raita. This keeps every component in the shape that suits it best.

Material, Reheating and Food-Contact Testing

Every DAKON RO series container is made from food-grade polypropylene (PP) and is microwave-safe, so customers can reheat their meal in the same container. It handles both hot and cold food.

DAKON plastic food containers have been tested by a NABL-accredited laboratory. Overall migration measured at 0.33 mg/dm² against a permitted limit of 10.0 mg/dm². You can see the full laboratory results here.

Every RO series container is produced in a facility that runs ISO 9001:2015 and ISO 22000:2018 systems, along with HACCP and GMP. For a buyer checking whether a supplier is a serious manufacturer, these are the documents worth asking for.

Stocking the RO Series Container Range: Notes for Distributors

For distributors, the RO series container is a fast-moving line because the same four sizes are used by restaurants, cloud kitchens, caterers and takeaway counters.

• Stackable design. Easy to store and transport in bulk without crushing.
• Three base colours. Milky, transparent and black, so you can serve both value and premium clients.
• One supplier for the full order. DAKON RO series, round and rectangular containers, food buckets and glasses, plus aluminium foil containers, foil rolls, cling film and garbage bags from Alfa Foil.
• Pan-India dispatch. We supply distributors across 24 states.

DAKON containers are also stocked on Hyperpure, and Alfa Foil supplies packaging to names such as Air India and Reliance Retail.

RO Series Container FAQs

What does RO mean in an RO series container?

An RO series container is a Round Open container. “RO” describes its shape: a round body with a wide, open mouth, closed with a separate clear lid. The number after RO is its capacity in ounces.

How many ml is an RO 16 container?

An RO 16 holds 16 oz, which is about 470 ml. It suits single portions of dal, curry, sabzi or a small noodle serving.

How many ml is an RO 24 container?

An RO 24 holds 24 oz, which is about 710 ml. Some sellers list their RO 24 at 720 ml or even 875 ml, so always confirm the capacity in ml before ordering.

Is an RO 24 the same as a 750 ml container?

Not exactly. An RO 24 is about 710 ml, slightly less than a 750 ml container, and its shape is wider and more open. If your portions were planned for a 750 ml box, test a sample first.

Can you microwave an RO series container?

Yes, an RO series container from DAKON is made from food-grade PP and is microwave-safe for reheating food. Remove the lid or keep it loose while heating so steam can escape.

Which RO size is right for one plate of biryani?

For most single biryani orders, an RO 24 is the usual choice. For larger portions or biryani with raita and gravy packed together, move up to an RO 32.

Get the Right RO Series Container for Your Menu

The code on an RO series container only tells you part of the story. Check the capacity in ml, match the size to your dish, and test a sample before you commit to bulk.

DAKON makes the RO series container in 16, 24, 32 and 40 oz, in milky, transparent and black bases. See the full RO series range or the wider DAKON plastic containers line, then send your dish list and daily order count on WhatsApp at +91 92019 58140. We will suggest the right RO series container mix for your kitchen or your distribution business.