diff --git a/tests/framework/testParticles.cpp b/tests/framework/testParticles.cpp
index f593750d8bc4884e560e00f64bcc991141fadcf4..fd68a05c431b2c49b42867bc276ea45850d79561 100644
--- a/tests/framework/testParticles.cpp
+++ b/tests/framework/testParticles.cpp
@@ -11,132 +11,133 @@
 
 #include <catch2/catch.hpp>
 
-using namespace corsika::units;
-using namespace corsika::units::si;
 using namespace corsika;
 
 TEST_CASE("ParticleProperties", "[Particles]") {
 
   SECTION("Types") {
-    CHECK(Electron::GetCode() == Code::Electron);
-    CHECK(Positron::GetCode() == Code::Positron);
-    CHECK(Proton::GetCode() == Code::Proton);
-    CHECK(Neutron::GetCode() == Code::Neutron);
-    CHECK(Gamma::GetCode() == Code::Gamma);
-    CHECK(PiPlus::GetCode() == Code::PiPlus);
+    REQUIRE(Electron::code == Code::Electron);
+    REQUIRE(Positron::code == Code::Positron);
+    REQUIRE(Proton::code == Code::Proton);
+    REQUIRE(Neutron::code == Code::Neutron);
+    REQUIRE(Gamma::code == Code::Gamma);
+    REQUIRE(PiPlus::code == Code::PiPlus);
   }
 
   SECTION("Masses") {
-    CHECK(Electron::GetMass() / (511_keV) == Approx(1));
-    CHECK(Electron::GetMass() / GetMass(Code::Electron) == Approx(1));
+    REQUIRE(Electron::mass() / (511_keV) == Approx(1));
+    REQUIRE(Electron::mass() / mass(Code::Electron) == Approx(1));
 
-    REQUIRE((Proton::GetMass() + Neutron::GetMass()) / constants::nucleonMass ==
-            Approx(2));
+    REQUIRE((Proton::mass() + Neutron::mass()) / constants::nucleonMass == Approx(2));
   }
 
   SECTION("Charges") {
-    CHECK(Electron::GetCharge() / constants::e == Approx(-1));
-    CHECK(Positron::GetCharge() / constants::e == Approx(+1));
-    CHECK(GetCharge(Positron::GetAntiParticle()) / constants::e == Approx(-1));
+    REQUIRE(Electron::charge() / constants::e == Approx(-1));
+    REQUIRE(Positron::charge() / constants::e == Approx(+1));
+    REQUIRE(charge(Positron::anti_code) / constants::e == Approx(-1));
   }
 
   SECTION("Names") {
-    CHECK(Electron::GetName() == "e-");
-    CHECK(PiMinus::GetName() == "pi-");
-    CHECK(Nucleus::GetName() == "nucleus");
-    CHECK(Iron::GetName() == "iron");
+    REQUIRE(Electron::name() == "e-");
+    REQUIRE(PiMinus::name() == "pi-");
+    REQUIRE(Nucleus::name() == "nucleus");
+    REQUIRE(Iron::name() == "iron");
   }
 
   SECTION("PDG") {
-    CHECK(GetPDG(Code::PiPlus) == PDGCode::PiPlus);
-    CHECK(GetPDG(Code::DPlus) == PDGCode::DPlus);
-    CHECK(GetPDG(Code::NuMu) == PDGCode::NuMu);
-    CHECK(GetPDG(Code::NuE) == PDGCode::NuE);
-    CHECK(GetPDG(Code::MuMinus) == PDGCode::MuMinus);
-
-    CHECK(static_cast<int>(GetPDG(Code::PiPlus)) == 211);
-    CHECK(static_cast<int>(GetPDG(Code::DPlus)) == 411);
-    CHECK(static_cast<int>(GetPDG(Code::NuMu)) == 14);
-    CHECK(static_cast<int>(GetPDG(Code::NuEBar)) == -12);
-    CHECK(static_cast<int>(GetPDG(Code::MuMinus)) == 13);
+    REQUIRE(PDG(Code::PiPlus) == PDGCode::PiPlus);
+    REQUIRE(PDG(Code::DPlus) == PDGCode::DPlus);
+    REQUIRE(PDG(Code::NuMu) == PDGCode::NuMu);
+    REQUIRE(PDG(Code::NuE) == PDGCode::NuE);
+    REQUIRE(PDG(Code::MuMinus) == PDGCode::MuMinus);
+
+    REQUIRE(static_cast<int>(PDG(Code::PiPlus)) == 211);
+    REQUIRE(static_cast<int>(PDG(Code::DPlus)) == 411);
+    REQUIRE(static_cast<int>(PDG(Code::NuMu)) == 14);
+    REQUIRE(static_cast<int>(PDG(Code::NuEBar)) == -12);
+    REQUIRE(static_cast<int>(PDG(Code::MuMinus)) == 13);
   }
 
   SECTION("Conversion PDG -> internal") {
-    CHECK(ConvertFromPDG(PDGCode::KStarMinus) == Code::KStarMinus);
-    CHECK(ConvertFromPDG(PDGCode::MuPlus) == Code::MuPlus);
-    CHECK(ConvertFromPDG(PDGCode::SigmaStarCMinusBar) == Code::SigmaStarCMinusBar);
+    REQUIRE(convert_from_PDG(PDGCode::KStarMinus) == Code::KStarMinus);
+    REQUIRE(convert_from_PDG(PDGCode::MuPlus) == Code::MuPlus);
+    REQUIRE(convert_from_PDG(PDGCode::SigmaStarCMinusBar) == Code::SigmaStarCMinusBar);
   }
 
   SECTION("Lifetimes") {
-    REQUIRE(GetLifetime(Code::Electron) ==
+    REQUIRE(lifetime(Code::Electron) ==
             std::numeric_limits<double>::infinity() * si::second);
-    REQUIRE(GetLifetime(Code::DPlus) < GetLifetime(Code::Gamma));
-    REQUIRE(GetLifetime(Code::RhoPlus) / si::second ==
+    REQUIRE(lifetime(Code::DPlus) < lifetime(Code::Gamma));
+    REQUIRE(lifetime(Code::RhoPlus) / si::second ==
             (Approx(4.414566727909413e-24).epsilon(1e-3)));
-    REQUIRE(GetLifetime(Code::SigmaMinusBar) / si::second ==
+    REQUIRE(lifetime(Code::SigmaMinusBar) / si::second ==
             (Approx(8.018880848563575e-11).epsilon(1e-5)));
-    REQUIRE(GetLifetime(Code::MuPlus) / si::second ==
+    REQUIRE(lifetime(Code::MuPlus) / si::second ==
             (Approx(2.1970332555864364e-06).epsilon(1e-5)));
   }
 
   SECTION("Particle groups: electromagnetic") {
-    CHECK(IsEM(Code::Gamma));
-    CHECK(IsEM(Code::Electron));
-    CHECK_FALSE(IsEM(Code::MuPlus));
-    CHECK_FALSE(IsEM(Code::NuE));
-    CHECK_FALSE(IsEM(Code::Proton));
-    CHECK_FALSE(IsEM(Code::PiPlus));
-    CHECK_FALSE(IsEM(Code::Oxygen));
+    REQUIRE(is_em(Code::Gamma));
+    REQUIRE(is_em(Code::Electron));
+    REQUIRE_FALSE(is_em(Code::MuPlus));
+    REQUIRE_FALSE(is_em(Code::NuE));
+    REQUIRE_FALSE(is_em(Code::Proton));
+    REQUIRE_FALSE(is_em(Code::PiPlus));
+    REQUIRE_FALSE(is_em(Code::Oxygen));
   }
 
   SECTION("Particle groups: hadrons") {
-    CHECK_FALSE(IsHadron(Code::Gamma));
-    CHECK_FALSE(IsHadron(Code::Electron));
-    CHECK_FALSE(IsHadron(Code::MuPlus));
-    CHECK_FALSE(IsHadron(Code::NuE));
-    CHECK(IsHadron(Code::Proton));
-    CHECK(IsHadron(Code::PiPlus));
-    CHECK(IsHadron(Code::Oxygen));
-    CHECK(IsHadron(Code::Nucleus));
+    REQUIRE_FALSE(is_hadron(Code::Gamma));
+    REQUIRE_FALSE(is_hadron(Code::Electron));
+    REQUIRE_FALSE(is_hadron(Code::MuPlus));
+    REQUIRE_FALSE(is_hadron(Code::NuE));
+    REQUIRE(is_hadron(Code::Proton));
+    REQUIRE(is_hadron(Code::PiPlus));
+    REQUIRE(is_hadron(Code::Oxygen));
+    REQUIRE(is_hadron(Code::Nucleus));
   }
 
   SECTION("Particle groups: muons") {
-    CHECK_FALSE(IsMuon(Code::Gamma));
-    CHECK_FALSE(IsMuon(Code::Electron));
-    CHECK(IsMuon(Code::MuPlus));
-    CHECK_FALSE(IsMuon(Code::NuE));
-    CHECK_FALSE(IsMuon(Code::Proton));
-    CHECK_FALSE(IsMuon(Code::PiPlus));
-    CHECK_FALSE(IsMuon(Code::Oxygen));
+    REQUIRE_FALSE(is_muon(Code::Gamma));
+    REQUIRE_FALSE(is_muon(Code::Electron));
+    REQUIRE(is_muon(Code::MuPlus));
+    REQUIRE(is_muon(Code::MuMinus));
+    REQUIRE_FALSE(is_muon(Code::NuE));
+    REQUIRE_FALSE(is_muon(Code::Proton));
+    REQUIRE_FALSE(is_muon(Code::PiPlus));
+    REQUIRE_FALSE(is_muon(Code::Oxygen));
   }
 
   SECTION("Particle groups: neutrinos") {
-    CHECK_FALSE(IsNeutrino(Code::Gamma));
-    CHECK_FALSE(IsNeutrino(Code::Electron));
-    CHECK_FALSE(IsNeutrino(Code::MuPlus));
-    CHECK(IsNeutrino(Code::NuE));
-    CHECK_FALSE(IsNeutrino(Code::Proton));
-    CHECK_FALSE(IsNeutrino(Code::PiPlus));
-    CHECK_FALSE(IsNeutrino(Code::Oxygen));
+    REQUIRE_FALSE(is_neutrino(Code::Gamma));
+    REQUIRE_FALSE(is_neutrino(Code::Electron));
+    REQUIRE_FALSE(is_neutrino(Code::MuPlus));
+    REQUIRE_FALSE(is_neutrino(Code::Proton));
+    REQUIRE_FALSE(is_neutrino(Code::PiPlus));
+    REQUIRE_FALSE(is_neutrino(Code::Oxygen));
+
+    REQUIRE(is_neutrino(Code::NuE));
+    REQUIRE(is_neutrino(Code::NuMu));
+    REQUIRE(is_neutrino(Code::NuTau));
+    REQUIRE(is_neutrino(Code::NuEBar));
+    REQUIRE(is_neutrino(Code::NuMuBar));
+    REQUIRE(is_neutrino(Code::NuTauBar));
   }
 
   SECTION("Nuclei") {
-    CHECK_FALSE(IsNucleus(Code::Gamma));
-    CHECK(IsNucleus(Code::Argon));
-    CHECK_FALSE(IsNucleus(Code::Proton));
-    CHECK(IsNucleus(Code::Hydrogen));
-    CHECK(Argon::IsNucleus());
-    CHECK_FALSE(EtaC::IsNucleus());
-
-    CHECK(GetNucleusA(Code::Hydrogen) == 1);
-    CHECK(GetNucleusA(Code::Tritium) == 3);
-    CHECK(Hydrogen::GetNucleusZ() == 1);
-    CHECK(Tritium::GetNucleusA() == 3);
-
-    // Nucleus is a generic object, it has no specific properties
-    CHECK_THROWS(GetNucleusA(Code::Nucleus));
-    CHECK_THROWS(GetNucleusZ(Code::Nucleus));
-    CHECK_THROWS(GetMass(Code::Nucleus));
-    CHECK_THROWS(GetCharge(Code::Nucleus));
+    REQUIRE_FALSE(is_nucleus(Code::Gamma));
+    REQUIRE(is_nucleus(Code::Argon));
+    REQUIRE_FALSE(is_nucleus(Code::Proton));
+    REQUIRE(is_nucleus(Code::Hydrogen));
+    REQUIRE(Argon::is_nucleus());
+    REQUIRE_FALSE(EtaC::is_nucleus());
+
+    REQUIRE(nucleus_A(Code::Hydrogen) == 1);
+    REQUIRE(nucleus_A(Code::Tritium) == 3);
+    REQUIRE(Hydrogen::nucleus_Z() == 1);
+    REQUIRE(Tritium::nucleus_A() == 3);
+
+    REQUIRE_THROWS(nucleus_Z(Code::Nucleus));
+    REQUIRE_THROWS(nucleus_A(Code::Nucleus));
   }
 }