Russian dairy producers began more often to indicate on the packaging not the volume, but the weight. So, on a package or bottle of milk or kefir, "1 kg" or "1,000 g" may appear. Only sometimes the weight is supplemented with the equivalent in milliliters. Perhaps, in this way, manufacturers are trying to hide the decrease in the volume of products. Judge for yourself: 1 kg of milk takes only about 970 ml.
For some products like cream with a fat content of 33% or table vinegar, the ratio of weight and volume will be one to one. But with the rest of the liquid products, everything is not so clear.
| Product | Volume (l) | Weight (kg) |
| Jam | 1 | 1,3–1,4 |
| Water (at t 20 °C) | 1 | 0,998 |
| Vodka (at t 20 °C) | 1 | 0,953 |
| Fish oil (at t 20 °C) | 1 | 0,945 |
| Drinking yogurt | 1 | 1,025–1,035 |
| Kvass | 1 | 1,014 |
| Kefir | 1 | 1,027–1,039 |
| Cola | 1 | 1,045 |
| Coconut oil (at t 20 °C) | 1 | 0,93 |
| Olive oil (at t 20 °C) | 1 | 0,908 |
| Sunflower oil (at t 20 °C) | 1 | 0,92–0,93 |
| Honey | 1 | 1,35 |
| Condensed milk | 1 | 1,2 |
| Drinking milk | 1 | 1,029 |
| Beer 5% | 1 | 1,041 |
| Ryazhenka | 1 | 1,025–1,039 |
| Cream 10-20% | 1 | 1,005–1,020 |
| Cream 33% | 1 | 1 |
| Sour cream 15-20% | 1 | 1,018 |
| Sour cream 30-35% | 1 | 1,005 |
| Juice | 1 | 1,050 |
| Tomato paste | 1 | 1,2 |
| Vinegar 9% | 1 | 1 |
