== Forskellige indikatorer ==
{| class="wikitable" border="1" cellpadding="2"
! Indikator
! Lav pH
! Omslagspunkt
! Høj pH
|-
| [[Gentianviolet]] ([[methylviolet]])
| bgcolor="yellow" | gul
| align="center" | 0,0–2,0
| style="background:#8A2BE2; color:white;" | blåviolet
|-
| [[Malakitgrønt|Leucomalakitgrønt]] (første overgang)
| bgcolor="yellow" | gul
| align="center" | 0,0–2,0
| style="background:green; color:white;" | grøn
|-
| [[Leucomalakitgrønt]] (anden overgang)
| bgcolor="green" | grøn
| align="center" | 11,6–14
| farveløs
|-
| [[Thymolblåt]] (første overgang)
| bgcolor="red" | rød
| align="center" | 1,2–2,8
| bgcolor="yellow" | gul
|-
| Thymolblåt (anden overgang)
| bgcolor="yellow" | gul
| align="center" | 8,0–9,6
| style="background:blue; color:white;" | blå
|-
| [[Methylgult]]
| bgcolor="red" | rød
| align="center" | 2,9–4,0
| bgcolor="yellow" | gul
|-
| [[Bromphenolblåt]]
| bgcolor="yellow" | gul
| align="center" | 3,0–4,6
| style="background:purple; color:white" | lilla
|-
| [[Congorødt]]
| style="background:#8A2BE2; color:white;" | blåviolet
| align="center" | 3,0–5,0
| bgcolor="red" | rød
|-
| [[Methylorange]]
| bgcolor="red" | rød
| align="center" | 3,1–4,4
| bgcolor="orange" | orange
|-
| [[Bromcresolgrønt]]
| bgcolor="yellow" | gul
| align="center" | 3,8–5,4
| bgcolor="#00DD88" | blågrøn
|-
| [[Methylrødt]]
| bgcolor="red" | rød
| align="center" | 4,4–6,2
| bgcolor="yellow" | gul
|-
| Methylrødt / bromcresolgrønt
| bgcolor="red" | rød
| align="center" | 4,5–5,2
| bgcolor="green" | grøn
|-
| [[Litmustest|Azolitmin]]
| bgcolor="red" | rød
| align="center" | 4,5–8,3
| style="background:blue; color:white;" | blå
|-
| [[Bromcresolpurpur]]
| bgcolor="yellow" | gul
| align="center" | 5,2–6,8
| style="background:purple; color:white" | lilla
|-
| [[Bromthymolblåt]]
| bgcolor="yellow" | gul
| align="center" | 6,0–7,6
| style="background:blue; color:white;" | blå
|-
| [[Phenolrødt]]
| bgcolor="yellow" | gul
| align="center" | 6,8–8,4
| style="background:purple; color:white" | lilla
|-
| [[Neutralrødt]]
| bgcolor="red" | rød
| align="center" | 6,8–8,0
| bgcolor="yellow"| gul
|-
| [[Naphtholphthalein]]
| bgcolor="#FF9999" | farveløs (eller svagt rødlig)
| align="center" | 7,3–8,7
| bgcolor="#03A89E" | blågrøn
|-
| [[Cresolrødt]]
| bgcolor="yellow" | gul
| align="center" | 7,2–8,8
| bgcolor="#bb0080" | rødlilla
|-
| [[Phenolphthalein]]
| farveløs
| align="center" | 8,2–10,0
| bgcolor="fuchsia" | fuchsia
|-
| [[Thymolphthalein]]
| farveløs
| align="center" | 9,3–10,5
| style="background:blue; color:white;" | blå
|-
|}
Kemi