diff --git a/chameo.ttl b/chameo.ttl
index 86026ec..d8c5e3b 100644
--- a/chameo.ttl
+++ b/chameo.ttl
@@ -617,6 +617,17 @@ chameo:AtomicForceMicroscopy rdf:type owl:Class ;
 	skos:prefLabel "AtomicForceMicroscopy"@en .
 
 
+###  https://w3id.org/emmo/domain/chameo#BrunauerEmmettTellerMethod
+chameo:BrunauerEmmettTellerMethod rdf:type owl:Class ;
+	rdfs:subClassOf chameo:CharacterisationMethod ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a technique used to measure the specific surface area of porous materials by analyzing the adsorption of gas molecules onto the material's surface"@en ;
+	emmo:EMMO_26bf1bef_d192_4da6_b0eb_d2209698fb54 "https://www.wikidata.org/wiki/Q795838" ;
+	emmo:EMMO_c84c6752_6d64_48cc_9500_e54a3c34898d "https://en.wikipedia.org/wiki/BET_theory" ;
+	rdfs:label "BrunauerEmmettTellerMethod"@en ;
+	skos:prefLabel "BrunauerEmmettTellerMethod"@en ;
+	skos:altLabel "BET"@en .
+
+
 ###  https://w3id.org/emmo/domain/chameo#CalibrationData
 chameo:CalibrationData rdf:type owl:Class ;
 	rdfs:subClassOf chameo:CharacterisationData ;
@@ -1918,6 +1929,14 @@ chameo:MembraneOsmometry rdf:type owl:Class ;
 	skos:prefLabel "MembraneOsmometry"@en .
 
 
+###  https://w3id.org/emmo/domain/chameo#MercuryPorosimetry
+chameo:MercuryPorosimetry rdf:type owl:Class ;
+	rdfs:subClassOf chameo:CharacterisationMethod ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a method used to measure the pore size distribution and total pore volume of solid materials by infiltrating mercury into the pores under controlled pressure conditions and analyzing the amount of mercury intrusion"@en ;
+	rdfs:label "MercuryPorosimetry"@en ;
+	skos:prefLabel "MercuryPorosimetry"@en .
+
+
 ###  https://w3id.org/emmo/domain/chameo#Microscopy
 chameo:Microscopy rdf:type owl:Class ;
 	rdfs:subClassOf chameo:CharacterisationMethod ;
@@ -2124,6 +2143,16 @@ chameo:Potentiometry rdf:type owl:Class ;
 	skos:prefLabel "Potentiometry"@en .
 
 
+###  https://w3id.org/emmo/domain/chameo#PotentiostaticIntermittentTitrationTechnique
+chameo:PotentiostaticIntermittentTitrationTechnique rdf:type owl:Class ;
+	rdfs:subClassOf chameo:Chronoamperometry ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a technique that applies potential pulses to an electrochemical cell"@en ;
+	rdfs:comment "often used to determine the diffusion coefficient of chemical species in an active material" ;
+	rdfs:label "PotentiostaticIntermittentTitrationTechnique"@en ;
+	skos:prefLabel "PotentiostaticIntermittentTitrationTechnique"@en ;
+	skos:altLabel "PITT" .
+
+
 ###  https://w3id.org/emmo/domain/chameo#PreparedSample
 chameo:PreparedSample rdf:type owl:Class ;
 	rdfs:subClassOf chameo:Sample ;
@@ -2200,6 +2229,15 @@ chameo:PulsedElectroacousticMethod rdf:type owl:Class ;
 	skos:prefLabel "PulsedElectroacousticMethod"@en .
 
 
+###  https://w3id.org/emmo/domain/chameo#PseudoOpenCircuitVoltageMethod
+chameo:PseudoOpenCircuitVoltageMethod rdf:type owl:Class ;
+	rdfs:subClassOf chameo:Chronopotentiometry ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a technique used to measure the voltage of a cell under a low applied current as an estimate for the open-circuit voltage"@en ;
+	rdfs:label "PseudoOpenCircuitVoltageMethod"@en ;
+	skos:prefLabel "PseudoOpenCircuitVoltageMethod"@en ;
+	skos:altLabel "PseudoOCV"@en .
+
+
 ###  https://w3id.org/emmo/domain/chameo#RamanSpectroscopy
 chameo:RamanSpectroscopy rdf:type owl:Class ;
 	rdfs:subClassOf chameo:Spectroscopy ;
@@ -2500,6 +2538,14 @@ chameo:SquareWaveVoltammetry rdf:type owl:Class ;
 	rdfs:label "SquareWaveVoltammetry"@en ;
 	skos:prefLabel "SquareWaveVoltammetry"@en .
 
+###  https://w3id.org/emmo/domain/chameo#StaircaseGalvanostaticIntermittentTitrationTechnique
+chameo:StaircaseGalvanostaticIntermittentTitrationTechnique rdf:type owl:Class ;
+	rdfs:subClassOf chameo:GITT ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a variation of the GITT technique which introduces a series of increasing current pulses before the titration step"@en ;
+	skos:altLabel "SCGITT"@en ;
+	rdfs:label "StaircaseGalvanostaticIntermittentTitrationTechnique"@en ;
+	skos:prefLabel "StaircaseGalvanostaticIntermittentTitrationTechnique"@en .
+
 
 ###  https://w3id.org/emmo/domain/chameo#StepChronopotentiometry
 chameo:StepChronopotentiometry rdf:type owl:Class ;
@@ -2677,6 +2723,27 @@ chameo:XpsVariableKinetic rdf:type owl:Class ;
 	skos:prefLabel "XpsVariableKinetic"@en .
 
 
+###  https://w3id.org/emmo/domain/chameo#XrayDiffraction
+chameo:XrayDiffraction rdf:type owl:Class ;
+	rdfs:subClassOf chameo:ScatteringAndDiffraction ;	
+	emmo:EMMO_26bf1bef_d192_4da6_b0eb_d2209698fb54 "https://www.wikidata.org/wiki/Q12101244" ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a technique used to analyze the atomic and molecular structure of crystalline materials by observing the diffraction patterns produced when X-rays interact with the regular array of atoms in the crystal lattice"@en ;
+	emmo:EMMO_c84c6752_6d64_48cc_9500_e54a3c34898d "https://en.wikipedia.org/wiki/X-ray_crystallography" ;
+	skos:altLabel "XRD" ;
+	rdfs:label "XrayDiffraction"@en ;
+	skos:prefLabel "XrayDiffraction"@en .
+
+
+###  https://w3id.org/emmo/domain/chameo#XrayPowderDiffraction
+chameo:XrayPowderDiffraction rdf:type owl:Class ;
+	rdfs:subClassOf chameo:XrayDiffraction ;
+	emmo:EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "a method for analyzing the crystal structure of powdered materials by measuring the diffraction patterns produced when X-rays interact with randomly oriented crystallites within the sample"@en ;
+	emmo:EMMO_c84c6752_6d64_48cc_9500_e54a3c34898d "https://en.wikipedia.org/wiki/Powder_diffraction" ;
+	skos:altLabel "XRPD" ;
+	rdfs:label "XrayPowderDiffraction"@en ;
+	skos:prefLabel "XrayPowderDiffraction"@en .
+
+
 ###  https://w3id.org/emmo/domain/chameo#XrdGrazingIncidence
 chameo:XrdGrazingIncidence rdf:type owl:Class ;
 	rdfs:subClassOf chameo:ScatteringAndDiffraction ;