1.C.5."Superconductive" "composite" conductors in lengths exceeding 100 m or with a mass exceeding 100 g, as follows:

a. "Superconductive" "composite" conductors containing one or more niobium-titanium 'filaments', having all of the following:
1. Embedded in a "matrix" other than a copper or copper-based mixed "matrix"; and
2. Having a cross-section area less than 0.28 x 10⁻⁴ mm² (6 µm in diameter for circular 'filaments');
b. "Superconductive" "composite" conductors consisting of one or more "superconductive" 'filaments' other than niobium-titanium, having all of the following:
1. A "critical temperature" at zero magnetic induction exceeding 9.85 K (-263.3°C); and
2. Remaining in the "superconductive" state at a temperature of 4.2 K
(-268.95°C) when exposed to a magnetic field oriented in any direction perpendicular to the longitudinal axis of conductor and corresponding to a magnetic induction of 12 T with critical current density exceeding 1,750 A/mm² on overall cross-section of the conductor;
c. "Superconductive" "composite" conductors consisting of one or more "superconductive" 'filaments', which remain "superconductive" above 115 K (-158.15°C).
Technical Note
For the purposes of 1.C.5., 'filaments' may be in wire, cylinder, film, tape or ribbon form.