Sample type and size requirements

A wide range of sample types can be submitted for dating. We can advise on the suitability of different materials and the most effective pretreatments.

Table 1: Sample size requirements (Dry weights*)

MaterialAMS Dating (ideal weight)
Wood50mg
Charcoal50mg
Carbonates50mg
Peat^1-5g
Bone^1-5g
Lake Sediment^1g
Water (DIC)100ml
Methane~ 20mls of >15% methane

 

* Recommended weights given are for clean, dry material.
^ Ranges reflect varying carbon content (weights approximate).

Table 2: Approximate size of standard error (±1 sigma)

Sample age (yrs)Approximate standard error for AMS
500<20
1000<20
500020
10,00025
20,00060
30,000250
40,000500
50,000-

 

* Recommended weights given are for clean, dry material.
^ Ranges reflect varying carbon content (weights approximate).