Soldering other precipitation may wash the lead into the groundwater. Unfortunately, most lead-free solders are not eutectic formulations, melting at around , making it more difficult to create reliable joints with them. Other common solders include low-temperature formulations (often containing bismuth), which are often used to join previously-soldered assemblies without unsoldering earlier connections, and high-temperature formulations (usually containing silver) which are used for high-temperature operation or for first assembly of items which must not become unsoldered during subsequent operations. Alloying silver with other metals changes the melting point, adhesion and wetting characteristics, and tensile strength. Of all the brazing alloys, silver
Pokémon episodes removed from rotation name, and/or weapons in the episode. The first episode to be removed from rotation after the September 11 attacks of 2001, mainly because the censors noted similarities between the attacks and Tentacruel attacking the city. The character Nastina also used military-style weapons during the fight scenes in the episode. However, Tentacruel striking a building was not removed from the dub's opening theme, and the episode is still readily available on the home video and DVD markets. The episode was aired a month after the September 11 attacks, and was not aired in the US again until the series began airing