
Ana kuma san baka na ƙwallon yumbu da baka na ƙwallon yumbu ko baka na ƙwallon yumbu masu jure wa acid, galibi saboda ana sarrafa su da kyau ta amfani da dabarun yumbu masu jure wa acid. An tsara kayan da aka zaɓa na halitta a hankali ta hanyar jerin ayyukan tsari kamar ƙirar dabara, niƙa ƙwallon, tace laka, ƙirar mold, da sauransu. Bakan mai siffar ƙwallo da aka samar yana da kyau da kyau, kuma ƙayyadaddun bayanai da girma sun cika buƙatun shigarwa na jikin hasumiyar.
| Aiki | Naúrar | Fihirisa | Daidaitacce |
| Raba | g/cm3 | 2.3-2.6 | ZBG94003-86 |
| Yawan shan ruwa | % | <0.2 | GB8488-87 |
| Ƙarfin lanƙwasawa | Mpa | ≥45 | GB8488-87 |
| Ƙarfin matsi | Mpa | ≥200 | ZBG94003-86 |
| Kwanciyar hankali ta zafi | 350-20°C | Sau uku ba tare da fashewa ba | GB8488-87 |
| Cikakken adadin buɗewa | % | ≥65 | |
| Bayani dalla-dalla | m | ≤8.3 | |
| Juriyar acid | % | >98.8 | DIN |
| Juriyar Alkali | % | >87 | DIN |
| Kuskuren lanƙwasawa | % | <0.5 | DIN |
| Sinadarin sinadarai | SiO2 | Al2O3 | K2O | Na2O | MgO | Fe2O | Juriyar acid |
| Fihirisa | 69.8 | 22.5 | 0.95 | 0.82 | 0.12 | 0.49 | 99.8% |
1. Rarraba iskar gas iri ɗaya ce.
2. Ƙarfin injina mai girma.
3. Babban abin da ke da alaƙa da tsaro.
4. Kyakkyawan kwanciyar hankali.
5. Ƙarfin juriyar tsatsa.
6. Kuma ginin yana da sauƙi.
7. Tsawon rai na aiki.
1. Bulo mai siffar baka Babban ɓangaren tsarin baka mai siffar zagaye shine tayal ɗin yumbu mai siffar 'I-shaped', don haka ana kiransa da 'bulo mai siffar I'.
2. Bulo mai siffar ƙafa. Ƙasan ɓangaren baka mai siffar siffar zagaye shine tayal ɗin yumbu mai siffar triangle ko trapezoidal a ƙasa.
3. Tushen baka Tsakiyar ɓangaren baka mai siffar siffar siffar siffar siffar siffar giciye ce ta tsakiya.
Bakin ƙwallon yumbu kayan aiki ne masu kyau da kuma ingantattun abubuwan cika hasumiya don hana tsatsa a wuraren masana'antu kamar su coking da samar da sinadarin sulfuric acid (kamar narkar da iskar wutsiya don samar da acid, pyrite don samar da acid, da kuma sulfur don samar da acid), da kuma a cikin taki, narkar da sinadarai, masana'antu masu sauƙi, sinadarai masu amfani da man fetur, da sauran masana'antu.