The cellulose extraction treatment, typically used for tree rings, is applied also  to clean textile and paper samples. In addition to the AAA treatment, a bleaching  with sodium chlorite (NaClO2) is applied until the sample is bleached. This procedure eliminate the lignin and extract only the α-cellulose.

This protocol is typically applied to organic sediments. After a preliminary fine-mesh sieving to remove the big size exogenous material, the sediment is repeatedly washed by HCl at hot temperature, until all carbonates are removed. Then neutralized and dried in oven. For paleosoil sample, a further  basic attack is applied to dissolve humic acids which will then be precipitated by concentrated HCl, rised until neutral and used for dating.

This procedure is applied to bones, with the aim to remove the endogenous inorganic part (calcium hydroxyapatite), the exogenous element such as humic acids and to extract the collagen in the form of a gel. The AAA protocol is used at room temperature, with several HCl washes to ensurance all carbonates are removed. Follow a gelatinization phase of collagen and dried by freeze-drying.

This procedure is used for cremated bone samples. Archaeological cremated bones are typically subjected to high temperatures, generally ranging from 600°C to 1000°C during the cremation process. During this process the bioapatite crystallizes and does not susceptible to carbonates contamination over time. After a preliminary mechanical cleaning of the bone, it is treated with NaClO for 48 hours, during which the solution is changed more time, then with CH3COOH solution for 24 hours. The sample is then rinsed by ph3 solution and freeze-dried before acid digestion.

This protocol is used for mortar samples. Liquid N₂ (-196°C) and several ultrasonication steps are used to eliminate old limestone and extract the calcite. The calcite traps CO2 from the atmosphere during its solidification and gives indications when the mortar was formed, therefore on dating.

The combustion process involves organic samples, chemically treated, or non treated samples such as bioplastics. The combustion process occurs at T=900°C inside a sealed quartz tube where a weighetd sample together with CuO grains are present. The amount of the material added depends on the type of material. The produced CO2 is purified inside a high vacuum cryogenic line from H2O, non-condensable gases and other oxides different from CO2 and ready to pass at the succesive phase, the reduction process (graphitization phase).

This protocol is applicable to carbonate samples (shell, forams, mortar). The sample is placed in a specificous apparatus and after evacuated, the carbonate reacts with concentrated H₃PO₄ added_. The reaction produces CO2 gas, which is purified inside a high vacuum cryogenic line from H2O and ready to pass at the succesive phase, the reduction process (graphitization phase).

The CO_2, obtained via combustion or acid digestion, is purified through a cold solid trap (-45/70˚C) to remove water and is trapped by liquid N₂ (-196°C) under a high vacuum cryogenic line in a reduction reaction pyrex tube, ready for the so-called “Zinc Reaction”.  The Zn and TiH2, both in powder, are used in the reduction reaction which happens between 500-550°C in a muffle oven. This method allows to graphitize more samples simultaneously and a greater yield.